Mnemonics

'COLOUR' & '_COLOUR'

User-Defined Colours

Foreground:

'COLOUR' ("RGB: n n n" | num | name$)
'COLOR' ("RGB: n n n" | num | name$)

Background:

'_COLOUR' ("RGB: n n n" | num | name$)
'_COLOR' ("RGB: n n n" | num | name$)

Where: 

name$

Pre-defined colour name; e.g. 'COLOR'("Light Blue") or HTML Hex colour code; e.g. '_COLOR'("#800000").

num

Pre-defined (0 - 15) or user-defined (16 - 254) colour number (n = 0 - 254).

RGB: n n n

Three number RGB value (n = 0 - 255).