For cakes, color spreads well without much effort (and thankfully since I had a basic cakes with egg whites).
For sugar dough idem, color diffuses fairly rapidly kneading the dough.
However I am a bit disappointed with the purple (hence one star less), which I find a bit dull in cakes, compared to other colors.
But otherwise very good product (which will last long given the small quantities required) at a very attractive price.
The delivery was a bit long, my package has been detained at customs.