I'm the webmaster for the local astronomy club (http://www.brastro.org/), and we just recently updated our forum from 3.0.x to 3.2.3. I had installed three space related styles on the old forum, but I note in the styles db here they're not listed as compatible with 3.2.x, so I wanted to ask before I tried reinstalling them.
When new theme comes, it may get (at least seems to be) easier to update/maintain styles. But at the moment the best thing to do, is to develop a style based on prosilver yourself/someone else who knows what to do or request a style.
Usus est magister optimus! phpBB pre-Triton & latest php environment.
When answer lies in the question, question becomes redundant!