/etc/console-setup/vtrgb is in console-setup-linux 1.178ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | 1,222,57,255,0,118,44,204,128,255,0,255,0,255,0,255
1,56,181,199,111,38,181,204,128,0,255,255,0,0,255,255
1,43,74,6,184,113,233,204,128,0,0,0,255,255,255,255
|