Currently there is a hard-coded bodge to force a particular theme for group chats. This sucks.
I totally agree with that. We can use a theme for chat with one person, but group chat always use the SimKete theme and it is terrible when using a dark KDE theme. It would be nice to be at least able to use the same theme for chat and group chat.
This shouldn't be too hard to do, and I agree that it sucks. I'm marking this as junior job and changing milestone to 0.6-next
This is on the mailing list somewhere.
*** This bug has been marked as a duplicate of bug 316574 ***
*** This bug has been marked as a duplicate of bug 295843 ***