VDU19,L,p,r,g,b
p<=15 Set L to p (Standard col.)
p=16 Define L to r,g,b (Both parts)
p=17    "     "    "   (First flash col.)
p=18    "     "    "   (Second flash col.)
p=24 Border to r,g,b
p=25 Mouse colour L to r,g,b