but then it gave me an error which I think means I have to separate the red, green and blue...
What error did it give you?
You're using strings for colour which, I believe, should be INT.
The Setcolor command is
Function SetColor( red,green,blue ) Description Set current color. Information The SetColor command affects the color of Plot, DrawRect, DrawLine, DrawText, DrawImage and DrawPoly. The red, green and blue parameters should be in the range of 0 to 255.
which would be..
Setcolor (255,0,255) 'for that nasty pink colour.