I couldn't find this answered elsewhere (although there are *similar* subjects), so here goes.

I'm currently finishing a short two-week workshop using Processing with the 2nd-year students at our school, and many of our projects are installations using videoprojectors that project onto various surfaces (mobile or otherwise). Some of the forms are non-rectangular.

It would be nice to have the Present Mode frame in something other than grey, for precisely these needs. A black background would at least allow us to diminish the effects of excess image (yes, I know, you can still see the black, but it's negligable, and humans tend to ignore it). Our videoprojectors don't have masking images, as some do.

Of course I could build some Java wrapper around it all, but it's a lot of work for a short workshop where we build things too fast to do such development. Most of all for each project in the class.