I've got one, but dont know how to install it.
I rerely change the Opera skins...

Pity

Sometimes it is difficult to find the current tab, esp. if many pages are opend.
I suggest a solution: The current tab have to be incompressible in width.
(see picture)

http://i64.fastpic.ru/big/2014/0610/8e/65144748b367bc32ac6233b405988c8e.jpg