Highlight bar for skin menu?

[redwing]

Would it be possible to support a highlight bar for skin menu?



So it would read a color code from the skin file and, if it's set, display as a highlight bar in the skin menu.

This will be very useful, at least, for dark fine-tuned and pastels skin set.

Some skin names follow highlighter color while others follow background color, so it won't be a good idea to pick up a certain existing element color.