10 REM COLOUR NAVIGATOR
   20 REM F=FOREGROUND COLOUR, B=BACKGROUND COLOUR, M=MODE
   30 CLS
   40 INPUT "SELECT MODE",M
   50 INPUT "CHOOSE FOREGROUND COLOUR",F
   60 CLS
   70 INPUT "CHOOSE BACKGROUND COLOUR",B
   80 :
  100 CLS
  110 MODE M
  120 COLOUR F
  130 COLOUR B+128
  140 PRINT''"This is foreground colour ";F
  141 PRINT'"and background colour ";B
  143 PRINT'"in Screen Mode ";M