Have you tested it?
Huh? I'm writing it.
Okay.
Excellent! I'm really eager to test it with my extremely large projects 
Is planned in this version the possibility of deferring the creation of canvases for the scripts of custom blocks too?
In that case, if possible, please try to make sure that color collision is easily detectable. 
(just a suggestion)
Hi Stefano, yes! Your extremely large projects are one of the motivations for me to re-architect Snap!'s Morphic kernel. The idea is to get rid of most offscreen canvasses altogether. Scripts and blocks and almost all widgets will no longer even create canvas elements, except and until you export them. I'm currently far enough that I can already confirm that this new architecture does, indeed, meet my hopes. Stay tuned!
Color collision detection has already been optimized in the current version. It will not get any slower in new next one.
Excellent! I'm ready to give you all the support you need.
