Hello there, before anything, i want to say thank you for creating this awesome tool!
It's a pleasure to be able to make ZX SPectrum Games like this, and i really dig it.
I do have a problem with it, but i hope it's not anything mighty complicated for you to solve.
When i try to color the entity to another color that isn't red on both palletes, it just doesn't allow it.
I hope i'm not making a very complicated fix, but it would help a lot if you fixed it.
I only hope the best for you and your projects.