vec3 COLOUR_LIGHT_BLUE = vec3(0.42, 0.65, 0.85);
vec3 COLOUR_LIGHT_GREEN = vec3(0.25, 1.0, 0.25);
vec3 COLOUR_PALE_GREEN = vec3(0.42, 0.85, 0.65);
vec3 COLOUR_LIGHT_PURPLE = vec3(0.85, 0.25, 0.85);
vec3 COLOUR_BRIGHT_PINK = vec3(1.0, 0.5, 0.5);

vec3 COLOUR_BRIGHT_RED = vec3(1.0, 0.1, 0.02);
vec3 COLOUR_BRIGHT_BLUE = vec3(0.01, 0.2, 1.0);
vec3 COLOUR_BRIGHT_GREEN = vec3(0.01, 1.0, 0.2);
vec3 COLOUR_PALE_BLUE = vec3(0.42, 0.65, 0.85);
vec3 COLOUR_LIGHT_YELLOW = vec3(1.0, 1.0, 0.25);



#define USE_OKLAB