Task

Display a series of vertical color bars across the width of the display.

The color bars should either use:

   the system palette,   or 
   the sequence of colors: 
   black
   red
   green
   blue
   magenta
   cyan
   yellow
   white


SCREEN 1,320,200,5,1
WINDOW 2,"Color bars",(0,10)-(297,186),15,1
FOR a=0 TO 300
  LINE (a,0)-(a,186),(a+10)/10
NEXT
loop: GOTO loop