i feel like it is needed for bigger games because having multiple masks gets messy and the ability to color-code them would help with organization and not messing with the wrong one
Could you share a screenshot of the mess you write of? 
Yes sorry for the late response i have been busy with school i will try asap
Still interested on this screenshot.
We (the core team) are looking at collision mask management, so we appreciate every example that we can get.