10 MODE 0
20 LOCATE 4,7
30 PEN 3
40 PAPER 5
50 PRINT "Rojo sobre negro"
60 LOCATE 4,13
70 PEN 6
80 PAPER 3
90 PRINT "Azul sobre rojo"
100 LOCATE 4,19
110 PEN 5 
120 PAPER 6
130 PRINT "Negro sobre azul"
140 REM valores normales de PEN y PAPER 
150 PEN 1
160 PAPER 0