PhpStorm 6 Change PopUp Opacity

Hello,

I have installed php storm 6 and tries the darcula theme. Evertyhing is excellent except one detail.
The autocomplete popup, at the start when it pops, its very dark. But when you click in it and select something it gets much better. Probably this is an option but havent found it.
My objective is to have  the same light look when popup pops and not only when I select something in it

Can you please help me?

Thanks a lot.