Add LLTextEditor::setLinkColor for when links need to be another color!

This fixes blue on blue in notices for the classic skin,
while it does affect other skins, it's not very noticeable.
Actually this change kinda makes links match skins better overall...

indra/llui/lltexteditor.cpp

@@ -274,6 +274,7 @@ LLTextEditor::LLTextEditor(
 	mWriteableBgColor(LLUI::sColorsGroup->getColor("TextBgWriteableColor")),
 	mReadOnlyBgColor(LLUI::sColorsGroup->getColor("TextBgReadOnlyColor")),
 	mFocusBgColor(LLUI::sColorsGroup->getColor("TextBgFocusColor")),
+	mLinkColor(nullptr),
 	mReadOnly(parse_html),
 	mWordWrap(FALSE),
 	mShowLineNumbers(FALSE),
@@ -378,6 +379,11 @@ LLTextEditor::LLTextEditor(
 LLTextEditor::~LLTextEditor()
 {
 	gFocusMgr.releaseFocusIfNeeded( this ); // calls onCommit()
+	if (mLinkColor)
+	{
+		delete mLinkColor;
+		mLinkColor = nullptr;
+	}
 
 	// Scrollbar is deleted by LLView
 
@@ -4187,7 +4193,7 @@ void LLTextEditor::appendTextImpl(const std::string &new_text, const LLStyleSP s
 		LLUrlMatch match;
 		LLStyleSP link_style(new LLStyle);
 		if (style) *link_style = *style;
-		link_style->setColor(LLUI::sConfigGroup->getColor4("HTMLLinkColor"));
+		link_style->setColor(mLinkColor ? *mLinkColor : LLUI::sConfigGroup->getColor4("HTMLLinkColor"));
 		auto append_substr = [&](const size_t& pos, const size_t& count)
 		{
 			appendAndHighlightText(text.substr(pos, count), part, style);

indra/llui/lltexteditor.h

@@ -260,6 +260,8 @@ public:
 
 	void			setHandleEditKeysDirectly( BOOL b ) 	{ mHandleEditKeysDirectly = b; }
 
+	// Use for when the link color needs to be changed to avoid looking awful
+	void			setLinkColor(LLColor4* color) { if (mLinkColor) delete mLinkColor; mLinkColor = color; }
 
 	void			setOnScrollEndCallback(void (*callback)(void*), void* userdata);
 
@@ -504,6 +506,7 @@ private:
 	// Data
 	//
 	LLKeywords		mKeywords;
+	LLColor4*		mLinkColor;
 
 	// Concrete LLTextCmd sub-classes used by the LLTextEditor base class
 	class LLTextCmdInsert;