Shader:sendColor
Sends one or more colors to a special (''extern'' / ''uniform'') vec3 or vec4 variable inside the shader. The color components must be in the range of 1. The colors are gamma-corrected if global gamma-correction is enabled.

Extern variables must be marked using the ''extern'' keyword, e.g.

extern vec4 Color;

The corresponding sendColor call would be

shader:sendColor('Color', {r, g, b, a})

Extern variables can be accessed in both the Vertex and Pixel stages of a shader, as long as the variable is declared in each.

In versions prior to 11.0, color component values were within the range of 0 to 255 instead of 0 to 1.
Shader:sendColor( name, color, ... )
name string The name of the color extern variable to send to in the shader.
color table A table with red, green, blue, and optional alpha color components in the range of 1 to send to the extern as a vector.
... table Additional colors to send in case the extern is an array. All colors need to be of the same size (e.g. only vec3's).