INT 62 u - FGDRIVER v4.02 - "FG_SETCOLOR" - SET CURRENT COLOR
AX = 00AAh
BX = new color index (or text attribute in text modes)
Note: the FGDRIVER functions are rearranged with each major release, but
their parameters do not change (see #03474 at AX=0000h)
SeeAlso: AX=0018h,AX=0040h,AX=0045h