Changes

PALETTE <palette indexbackground> <colour codeforeground>

<palette indexbackground> is in the range 0-15 inclusive and defines the pen to change.<colour codeforeground> is a are r,g,b colour code codes with 2 bits for each colour defined in binary as r1 r0 g1 g0 b1 b0. Therefore black is 000000, bright white is 111111, white (grey) is 010101 and bright red is 110000.