I do not know how you want to solve this issue. I had an idea that the colors would just represent the nature of the atoms, like NO2 would look one color, and O2 another, and that's what the "Colors" would mean, which is why some bits refuse to come together because they are incompatible, but I didn't wanna go into chemical compounds, so I used colored instead. . . . .Simplifying things. . . . . .