Background(+RDT,+GRT,+BLT,+RDB,+GRB,+BLB,+TIM,x00)

Creates a gradient background using an RGB color scale.  (0,0,0) is Black and (255,255,255) is White.

RDT = Red (Top)

Red value of top half of screen.

GRT = Green (Top)

Green value of top half of screen.

BLT = Blue (Top)

Blue value of top half of screen.

RDB = Red (Bottom)

Red value of bottom half of screen.

GRB = Green (Bottom)

Green value of bottom half of screen.

BLB = Blue (Bottom)

Blue value of bottom half of screen.

TIM = Time for instruction to resolve (unsigned)
-050 = 5.0 Seconds.
-100 = 10.0 Seconds.
-255 = 25.5 Seconds.

