how to change background color of jit.window
Very elementary question, but unanswered yet: How do I change the background color of a jit.window?
Max Patch
Copy patch and select New From Clipboard in Max.
Send it a matrix (even a single cell) of the color you want.
And if you're in GL land, the erase_color attribute to jit.gl.render is the one you're looking for.