!p.color=16
r=bytarr(16)
g=bytarr(16)
b=bytarr(16)
r=[255,0,255,0,0,255,255,0,255,0,255,0,0,255,255,0]
g=[255,0,0,255,0,255,0,255,255,0,0,255,0,255,0,255]
b=[255,0,0,0,255,0,255,255,255,0,0,0,255,0,255,255]
tvlct,r,g,b