It looks like my Guest OS (Win XP SP2) under all the Parallels betas support 16 or 24 bit depths. I need to run an app that requires 16 or 32 bits. This is fine - I just drop my depth down to 16 and all is good. The problem is, if I look at the VM cross-eyed, breathe on it wrong or just think impure thoughts, Parallels decides that 16 bits aren't enough and bumps me back to 24. For instance, changing resolution size changes the bit depth, as does switching between full screen and windowed. Does anyone have a solution for this?