Let's all hijack skins. Also here's some half-finished code to fix the preview window.

indra/newview/skins/DarkOrange.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Dark Orange</string>
+    <key>author_name</key>
+        <string>Pony Ghost</string>
+    <key>additional_author_names</key>
+        <string>Linden Lab</string>
+    <key>skin_info</key>
+        <string>Game-style interface. Make your Second Life Viewer more like online games
+If you like it, there are still many other colors for you to choose.</string>
+    <key>folder_name</key>
+        <string>darkorange</string>
+    </map>
+</llsd>

indra/newview/skins/DarkRed.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Dark Red</string>
+    <key>author_name</key>
+        <string>LordGregGreg</string>
+    <key>additional_author_names</key>
+        <string>Chalice Yao, JB Kraft, Linden Lab</string>
+    <key>skin_info</key>
+        <string>Everything should always be red
+		All Images and modifications done are provided free to use, modify, and distribute, so long as this infomation is distributed with it.
+</string>
+    <key>folder_name</key>
+        <string>darkgred</string>
+    </map>
+</llsd>

indra/newview/skins/Default.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Default</string>
+    <key>author_name</key>
+        <string>Linden Lab</string>
+    <key>additional_author_names</key>
+        <string></string>
+    <key>skin_info</key>
+        <string>This is the default skin for nearly every Second Life viewer.</string>
+    <key>folder_name</key>
+        <string>default</string>
+    </map>
+</llsd>

indra/newview/skins/Emerald.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Emerald Gems</string>
+    <key>author_name</key>
+        <string>Ikaru Aichi</string>
+    <key>additional_author_names</key>
+        <string>Linden Lab</string>
+    <key>skin_info</key>
+        <string> </string>
+    <key>folder_name</key>
+        <string>emerald</string>
+    </map>
+</llsd>

indra/newview/skins/Gemini.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Gemini</string>
+    <key>author_name</key>
+        <string>Skills Hak</string>
+    <key>additional_author_names</key>
+        <string>Linden Lab</string>
+    <key>skin_info</key>
+        <string>Originally made for the INFAMOUS Gemini viewer. Also default skin of Second Life 3.0. Use it if you don't like eye-cancer.</string>
+    <key>folder_name</key>
+        <string>gemini</string>
+    </map>
+</llsd>

indra/newview/skins/GregsRed.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Greg Red @ @</string>
+    <key>author_name</key>
+        <string>LordGregGreg</string>
+    <key>additional_author_names</key>
+        <string>Chalice Yao, JB Kraft, Linden Lab</string>
+    <key>skin_info</key>
+        <string>Everything should always be red
+		All Images and modifications done are provided free to use, modify, and distribute, so long as this infomation is distributed with it.
+</string>
+    <key>folder_name</key>
+        <string>gred</string>
+    </map>
+</llsd>

indra/newview/skins/OpenLife.xml

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+<llsd>
+    <map>
+    <key>skin_name</key>
+        <string>Open Life</string>
+    <key>author_name</key>
+        <string>3DX</string>
+    <key>additional_author_names</key>
+        <string>Linden Lab</string>
+    <key>skin_info</key>
+        <string>This is the skin from the open life viewer.</string>
+    <key>folder_name</key>
+        <string>openlife</string>
+    </map>
+</llsd>

indra/newview/skins/Pony-Aquablue/License and Credit.txt

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+This skin was modified by Pony Ghost from the default linden skin provided for the Green Life Emerald Viewer.
+
+All Images and modifications done are provided free to use, modify, and distribute, so long as this infomation is distributed with it.

indra/newview/skins/Pony-Aquablue/colors.xml

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+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<settings version = "101">
+</settings>

indra/newview/skins/Pony-Aquablue/colors_base.xml

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+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<settings version = "101">
+    
+<!-- WINDOWS -->
+<TitleBarFocusColor value="255, 255, 255, 30" />	<!-- Focused window title bar highlight, no equivalent for unfocused windows -->
+<FloaterFocusBorderColor value="0, 0, 0, 80" />
+<FloaterUnfocusBorderColor value="0, 0, 0, 80" />
+<FocusBackgroundColor value="62, 62, 62, 255" />	<!-- Background color of focused floaters -->
+<DefaultBackgroundColor value="62, 62, 62, 140" />	<!-- Background color for unfocused floaters -->
+<ColorDropShadow value="0, 0, 0, 200" />		<!-- The drop shadow behind windows and menus -->
+<DefaultHighlightDark value="26, 26, 26, 255" />
+<DefaultHighlightLight value="115, 132, 155, 255" />
+<DefaultShadowDark value="26, 26, 26, 255" />
+<DefaultShadowLight value="0, 0, 0, 255" />
+
+<!-- LABELS -->
+<LabelDisabledColor value="147, 169, 213, 77" />
+<LabelSelectedColor value="255, 255, 255, 255" />
+<LabelSelectedDisabledColor value="164, 190, 237, 128" />
+<LabelTextColor value="147, 169, 213, 255" />
+
+<!-- LOGIN -->
+<LoginProgressBarBgColor value="255, 255, 255, 255" />
+<LoginProgressBarFgColor value="255, 255, 255, 255" />
+<LoginProgressBoxBorderColor value="0, 30, 60, 0" />
+<LoginProgressBoxCenterColor value="0, 0, 0, 200" />
+<LoginProgressBoxShadowColor value="0, 0, 0, 200" />
+<LoginProgressBoxTextColor value="255, 255, 255, 255"/>
+
+<!-- BUTTONS -->
+<ButtonLabelColor value="220, 220, 220, 255" /> 	<!-- Text labels for buttons, like the "OK" text -->
+<ButtonLabelSelectedColor value="220, 220, 220, 255" />
+<ButtonLabelDisabledColor value="147, 169, 213, 200" />
+<ButtonLabelSelectedDisabledColor value="164, 190, 237, 200" />
+<ButtonSelectedBgColor value="62, 62, 62, 255" />
+<ButtonSelectedColor value="255, 255, 255, 255" />
+<ButtonUnselectedBgColor value="62, 62, 62, 255" />
+<ButtonUnselectedFgColor value="255, 255, 255, 255" />
+<ButtonBorderColor value="239, 156, 0, 255" />
+<ButtonFlashBgColor value="255, 190, 62, 127" />
+<ButtonColor value="255, 255, 255, 255" /> 		<!-- Blended with button art, usually left as opaque white -->
+<ButtonImageColor value="255, 255, 255, 255" /> 	<!-- Blended with button art, usually left as opaque white -->
+
+<!-- SLIDERS -->
+<SliderDisabledThumbColor value="0, 0, 0, 255" />
+<SliderThumbCenterColor value="200, 200, 200, 255" />
+<SliderThumbOutlineColor value="255, 255, 255, 255" />
+<SliderTrackColor value="255, 255, 255, 255" />
+
+<!-- TEXTFIELDS -->
+<TextBgFocusColor value="200, 209, 204, 255" />		<!-- Text field background when receiving input (focused) -->
+<TextBgReadOnlyColor value="62, 62, 62, 160" />	        <!-- Text field background when read-only -->
+<TextBgWriteableColor value="200, 209, 204, 230" />	<!-- Text field background when not receiving input (unfocused) -->
+<TextCursorColor value="0, 0, 0, 255" />
+<TextFgColor value="0, 0, 0, 255" />
+<TextFgReadOnlyColor value="255, 255, 255, 200" />
+<TextFgTentativeColor value="0, 0, 0, 128" />
+<TextEmbeddedItemReadOnlyColor value="58, 147, 242, 255" />	<!-- i.e. About Land name that you don't own -->
+<TextEmbeddedItemColor value="0, 0, 128, 255" />
+<TextDefaultColor value="0, 20, 0, 255"/>
+<TextLinkColor value="144, 165, 208, 255"/>
+<TextLinkHoverColor value="255, 255, 255, 255"/>
+
+
+  <!-- LISTBOXES -->
+<ScrollBgReadOnlyColor value="200, 209, 204, 255" />
+<ScrollBgWriteableColor value="200, 209, 204, 255" />
+<ScrollBGStripeColor value="100, 100, 100, 40" />
+<ScrollDisabledColor value="128, 128, 128, 204" />
+<ScrollSelectedBGColor value="100, 100, 188, 150" />
+<ScrollSelectedFGColor value="0, 0, 0, 204" />	            <!-- Text color -->
+<ScrollUnselectedColor value="0, 0, 0, 204" />	            <!-- Text color -->
+<ScrollHighlightedColor value="183, 184, 188, 128" />	    <!-- Hover color -->
+<ScrollbarThumbColor value="60, 76, 124, 255" />            <!-- Scroll bar-->
+<ScrollbarTrackColor value="153, 154, 158, 255" />          <!-- Scroll bar background-->
+
+<!-- MENUS -->
+<MenuBarBgColor value="62, 62, 62, 255" />
+<MenuBarGodBgColor value="62, 128, 62, 255" />
+<MenuNonProductionGodBgColor value="0, 128, 0, 255" />
+<MenuNonProductionBgColor value="128, 0, 0, 255" />
+<MenuDefaultBgColor value="0, 0, 0, 255" />
+<MenuItemDisabledColor value="133, 133, 164, 128" />        <!-- Menu text color; also text color for pie menus and treeviews (like Inventory) -->
+<MenuItemEnabledColor value="255, 255, 255, 255" />         <!-- Menu text color; also text color for pie menus and treeviews (like Inventory) -->
+<MenuItemHighlightBgColor value="183, 184, 188, 100" />
+<MenuItemHighlightFgColor value="255, 255, 255, 255" />	    <!-- Highlighted menu text color; also treeview node selection highlight -->
+<MenuPopupBgColor value="0, 0, 0, 255" />
+
+<!--  PIE MENUS -->
+<PieMenuBgColor value="62, 62, 62, 150" />
+<PieMenuLineColor value="0, 0, 0, 128" />
+<PieMenuSelectedColor value="183, 184, 188, 77" />
+
+<!-- TOOLTIPS -->
+<ToolTipBgColor value="183, 184, 188, 200" />
+<ToolTipBorderColor value="171, 212, 245, 255" />
+<ToolTipTextColor value="0, 0, 0, 255" />
+
+<!-- NOTIFICATION POP-UPS -->
+<NotifyBoxColor value="70, 170, 255, 255" />
+<NotifyTextColor value="0, 0, 0, 255" />
+<NotifyCautionBoxColor value="254, 209, 118, 255" /> 	<!-- the background color of caution permissions prompts -->
+<NotifyCautionWarnColor value="0, 0, 0, 255" /> 	<!-- the foreground color of the special title text in caution permissions prompts -->
+<GroupNotifyBoxColor value="70, 170, 255, 255" />
+<GroupNotifyTextColor value="0, 30, 60, 255" />
+
+<!-- CHAT AND IM HISTORY TEXTBOX COLORS -->
+<ChatHistoryBgColor value="0, 0, 0, 0" />
+<ChatHistoryTextColor value="255, 255, 255, 255" />
+<IMHistoryBgColor value="0, 30, 80, 200" />
+<IMHistoryTextColor value="255, 255, 255, 255" />
+
+<!-- IN-WORLD SELECTION -->
+<SilhouetteParentColor value="255, 255, 0, 255" />
+<SilhouetteChildColor value="32, 106, 196, 255" />
+<HighlightParentColor value="171, 212, 245, 255" />
+<HighlightChildColor value="171, 212, 245, 255" />
+<HighlightInspectColor value="255, 0, 255, 255" />
+
+<!-- EDIT MODE GRID -->
+<GridFocusPointColor value="255, 255, 255, 128" />
+<GridlineColor value="255, 255, 255, 255" />
+<GridlineBGColor value="235, 235, 255, 200" />
+<GridlineShadowColor value="0, 0, 0, 80" />
+
+<!-- PROPERTY LINES -->
+<PropertyColorAvail value="0, 0, 0, 0" />
+<PropertyColorGroup value="0, 184, 184, 102" />
+<PropertyColorOther value="255, 0, 0, 102" />
+<PropertyColorSelf value="0, 255, 0, 102" />
+<PropertyColorForSale value="255, 128, 0, 102" />
+<PropertyColorAuction value="128, 0, 255, 102" />	<!-- Match the color on the world map -->
+
+<!-- Icon Enable/Disable -->
+<IconEnabledColor value="255, 255, 255, 255"/>
+<IconDisabledColor value="147, 169, 213, 200"/>
+
+<!-- MAP -->
+<MapAvatar value="0, 255, 0, 255" />
+<MapFriend value="255, 255, 0, 255" />
+
+<!-- MINI-MAP -->
+<NetMapBackgroundColor value="0, 0, 0, 77" />
+<NetMapYouOwnAboveWater value="0, 255, 255, 255" />
+<NetMapYouOwnBelowWater value="0, 200, 200, 255" />
+<NetMapGroupOwnAboveWater value="255, 0, 255, 255" />
+<NetMapGroupOwnBelowWater value="200, 0, 200, 255" />
+<NetMapOtherOwnAboveWater value="60, 60, 60, 255" />
+<NetMapOtherOwnBelowWater value="30, 30, 30, 255" />
+<NetMapThisRegion value="255, 255, 255, 255" />
+<NetMapLiveRegion value="204, 204, 204, 255" />
+<NetMapDeadRegion value="255, 128, 128, 255" />
+<NetMapFrustum value="255, 255, 255, 20" />
+<NetMapFrustumRotating value="255, 255, 255, 51" />
+
+<!-- HELP WINDOW -->
+<HelpBgColor value="200, 209, 204, 255" />
+<HelpFgColor value="0, 0, 0, 255" />
+<HelpScrollTrackColor value="183, 184, 188, 255" />
+<HelpScrollThumbColor value="80, 96, 124, 255" />
+<HelpScrollHighlightColor value="115, 132, 155, 255" />
+<HelpScrollShadowColor value="0, 0, 0, 255" />
+
+<!-- MISC -->
+<AvatarNameColor value="251, 175, 93, 255" /> 		<!-- Text color of avatar nametags -->
+<FocusColor value="239, 156, 0, 255" /> 		<!-- Color of the glow around UI controls with keyboard focus -->
+<FloaterButtonImageColor value="239, 156, 0, 255" /> 	<!-- The floater buttons (like the close box) are white images that receive this color. -->
+<ButtonCautionImageColor value="255, 255,  255, 255" />	<!-- Match the caution dialog buttons to the default -->
+<HealthTextColor value="255, 255, 255, 255" />
+<MapAutopilotColor value="255, 128, 0, 255" />
+<ContextSilhouetteColor value="239, 156, 0, 255" />	<!-- For "context" highlighting, i.e. pie menu -->
+<ScriptBgReadOnlyColor value="100, 100, 100, 255" />
+<ParcelTextColor value="144, 165, 208, 255" />		<!-- Parcel name on menu bar, normal state -->
+<ParcelHoverColor value="255, 255, 255, 255" />		<!-- Parcel name on menu bar, hover state -->
+<TimeTextColor value="255, 255, 255, 255" />		<!-- SL Time on menu bar -->
+<BalanceTextColor value="0, 255, 0, 255" />		<!-- Linden dollar balance on menu bar -->
+<HealthTextColor value="255, 255, 255, 255" />		<!-- Damage meter text on menu bar -->
+<GroupOverTierColor value="110, 15, 15, 255" />		<!-- Warning text in Group Info window -->
+<FilterBackgroundColor value="0, 0, 20, 255" />         <!-- Matching region of Inventory search text -->
+<FilterTextColor value="255, 200, 70, 255" />
+<InventoryItemSuffixColor value="191, 216, 216, 255" />     <!-- "worn", "no modify", etc-->
+<InventorySearchStatusColor value="255, 255, 255, 255" />
+<ConsoleBackground value="0, 0, 0, 255" />
+<FolderViewLoadingMessageTextColor value="240, 165, 90, 255"/>     <!-- "loading..." in the inv -->
+<InventoryBackgroundColor value="62, 62, 62, 80"/>
+
+<!-- Alert box colors -->
+<AlertBoxColor value="62, 62, 62, 255" />               <!-- Warnings floaters, like when returning objects -->
+<AlertTextColor value="147, 169, 213, 255" />
+<AlertCautionBoxColor value="254, 209, 118, 255" />	<!-- Background color of caution alerts -->
+<AlertCautionTextColor value="0, 0, 0, 255" />		<!-- Foreground color of the special title text in caution alerts -->
+
+<!--  Multi sliders, as in the sky animation setting -->
+<MultiSliderDisabledThumbColor value="0, 0, 0, 255"/>
+<MultiSliderThumbCenterColor value="183, 184, 188, 255"/>
+<MultiSliderThumbOutlineColor value="0, 0, 0, 255"/>
+<MultiSliderTrackColor value="30, 30, 30, 255"/>
+<MultiSliderThumbCenterSelectedColor value="255, 50, 50, 255"/>
+<MultiSliderTriangleColor value="255, 255, 50, 255"/>
+
+</settings>