Another hie thread but this might interest you. A human gos to Equestria but he appears in a bucket of ink/paint and he/she will find out that they are made of paint and ink
(Rules)
<1> they can "eat" things but it becaums both a color they can use and it makes them dencer
<2> magic has a low effect on them (have you tried to hold paint with your bare hand)
<3>they can go in a "liquid" State and a solid