We have two properties, which should set color for us
focusedTextSelectionColor unfocusedTextSelectionColor
After setting them you will notice, that highlight color haven’t changed.
But those properties works for spark RichEditableText, which is actually a base for TextArea.
So you need to create custom TextAreaSkin and modify it a bit.
Find:
<s:RichEditableText id="textDisplay" heightInLines="10" widthInChars="15" />
And add properties like this:
<s:RichEditableText id="textDisplay" heightInLines="10" widthInChars="15" focusedTextSelectionColor="0x00b4ff" unfocusedTextSelectionColor="0x00b4ff"/>
That’s it!
Now apply newly created skin to you Spark TextArea!