Get yourself a comfy chair (or change the step value)...
p.s. or did you mean some move from blues through greens through reds?
Graphics 800,600 Const mystep:Int=5 For Local r:Int=0 To 255 Step mystep For Local g:Int=0 To 255 Step mystep For Local b:Int=0 To 255 Step mystep Cls SetColor r,g,b DrawRect 0,0,100,100 SetColor 255,255,255 DrawText "r="+r+" g="+g+" b="+b,0,200 Flip Next Next Next
p.s. or did you mean some move from blues through greens through reds?