INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - SET DOS COLOR                               
	AX = 1263h
	DL = new video attribute to be used by DOS functions
Return: ???
Note:	This function is known to be supported by Paragon Technology Systems
	  PTS-DOS 6.51 and S/DOS 1.0, and probably was also supported
	  in earlier releases.
SeeAlso: AX=1262h