Thank you so much for the feedback!
You can toggle the color mixing table in options if you need it (it is not working on the last level, that will be fixed later).
The X ray mode is interesting, ill have to think about it.
About dragging luggage, there still not implemented but I was thinking about, if you are holding the C key, if theres cyan in the grid you will grab that one, same with M and Y. I think that may do? Idk I have to try.