So let me get this straight.
The chances of coloured foals out of these parents (assuming heterozygous where possible)are:
1)buckskin X cremello= 1/4buckskin, 1/4
palomino, 1/4perlino, 1/4 cremello
2)buckskin X perlino= 1/4possible perlino
3)buckskin X palomino= 1/8possible perlino
4)perlino X cremello= 1/2perlino, 1/2cremello
5)perlino X palomino =1/4buckskin, 1/4
palomino, 1/4perlino, 1/4 cremello
6)palomino X cremello= NO POSSIBLE PERLINO(1/2palomino, 1/2cremello)
That’s what I understand of genentics according to http://www.vgl.ucdavis.edu/~lvmillon/coats.html
Figuring all that out was strangely fun.