/usr/bin/setvtrgb

Usage: setvtrgb [option...] [vga|FILE|-]

If you use the FILE parameter, it can be either in decimal
or hexadecimal format, and will be detected on runtime.

Decimal FILE format should be exactly 3 lines of comma-separated
decimal values for RED, GREEN, and BLUE.
To seed a valid FILE:
   cat /sys/module/vt/parameters/default_{red,grn,blu} > FILE

Hexadecimal FILE format should be exactly 16 lines of hex triplets
for RED, GREEN and BLUE, prefixed with a number sign (#).
For example:
   #000000
   #AA0000
   #00AA00
And so on, for all the 16 colors.

Options:
  -C, --console=DEV   the console device to be used.
  -V, --version       print version number.
  -h, --help          print this usage message.

Report bugs to authors.