Colour settings
The following colours are predefined:

  black     = $00000000
  white     = $00FFFFFF
  dkred     = $000000B5
  red       = $000000FF
  ltred     = $009A7AFF
  dkgreen   = $00009000
  green     = $0000E000
  ltgreen   = $00A0E0A0
  dkblue    = $00900000
  blue      = $00FF0000
  ltblue    = $00FFB090
  dkbrown   = $004070A0
  brown     = $000090E0
  ltbrown   = $0070C0FF
  yellow    = $0000FFFF
  dkgrey    = $00707070
  midgrey   = $00A0A0A0
  grey      = $00C0C0C0
  silver    = $00D0D0D0
  ltgrey    = $00E0E0E0
  maroon    = $0060009A
  olive     = $005090A0
  purple    = $00A000A0
  fuschia   = $00D070E9
  lime      = $00A8F800
  aqua      = $00FFFF90
The following are intended mainly for use as 
background or paper colours.
  primrose  = $00B0FFFF
  parchment = $00D0FFFF
  peach     = $00CCE0FF
  Offwhite  = $00F8F8F8
  lavender  = $00FFF0F8
  bluetint  = $00FFFFF0
  greentint = $00E6FFE6
  pink      = $00EAE5FF
  clear     = $00FFFFFF

The following are initially set to black, 
but can be redefined during a run by the 
'Color' command.
 
      colr0  to colr9

