[Ayatana] semi-transparent indicator menus

["frederik.nnaji@xxxxxxxxx" <frederik.nnaji@xxxxxxxxx>]

Unity introduces a new look, but Indicators Menus, which were there before the Dash, are not yet up to date in that respect.

Obviously, there is no alpha for indicator menus, no way to set transparency in CCSM for them.

I'd like to have control over that as a power user, power user being the bridge between designers, developers and plain users.

the main reason i see for having transparent indicator menus is visual consistency:

finally, we'd have one unified look for all of Unity, of which Indicator Menus imo are a part.