$color

$color independently scales the red, green and blue channels of an albedo.

$color "[<red float> <green float> <blue float>]"
$color "{<red integer> <green integer> <blue integer>}"

Quote marks are required. A float value of 1.0 (or an integer value of 255) represents a unit scale; thus, the default value is [1 1 1] (or {255 255 255}).

Solid color

This parameter can be used without an albedo to display a solid color without the need of a texture (except a %tooltexture). As well as a small saving in performance and memory footprint, material_modify_control can be used to completely change the material's color at run-time if desired.

In this scenario, [1 1 1] is pure white.

Tip:If the material is representing empty blackness, you will probably want to use the UnlitGeneric shader to prevent it from ever becoming grey.