Ultimate Edition Forum

I currently using the latest stable version of Ultimate Edition.I didn't like Ultimate Edition's default theme so I tried to change it.I downloaded some of GTK-3x themes and extract them to ~.themes folder then went to Appearance menu but there was no new installed theme was shown there.Was there something wrong?

ps. I attached a pic of my system information also.

Please refer to the previous thread:
viewtopic.php?f=39&t=9966

Off-Topic :

Unlocked Topic and combined posts out of Newbies Corner so they show up on Active Topics(What's up with that anyways?)

Which themes?