static const mu_Color BLACK = {0, 0, 0, 255};
static const mu_Color WHITE = {255, 255, 255, 255};
static const mu_Color LIGHT_GRAY = {222, 222, 222, 255};
static const mu_Color DARK_GRAY = {128, 128, 128, 255};
static const mu_Color RED = {255, 0, 0, 255};
static const mu_Color GREEN = {0, 255, 0, 255};
static const mu_Color BLUE = {0, 0, 255, 255};
static const mu_Color TRANSPARENT = {0, 0, 0, 0};