#pragma once

// Colours.
typedef struct {
  double r, g, b, a;
} glColour;

// Default colors.
// -- Greyscale.
extern glColour cWhite;
#define cGrey   cGrey70
extern glColour cBlack;

extern glColour cGrey90;
extern glColour cGrey80;
extern glColour cGrey70;
extern glColour cGrey60;
extern glColour cGrey50;
extern glColour cGrey40;
extern glColour cGrey30;
extern glColour cGrey20;
extern glColour cGrey10;

extern glColour cGreen;
extern glColour cDarkRed;
extern glColour cRed;