static float const cWhite[] = {1.0, 1.0, 1.0};
static float const cBlack[] = {0.0, 0.0, 0.0};
static float const cGrey[] = {0.5, 0.5, 0.5};
static float const cWhite[] = {1.0, 1.0, 1.0};
static float const cBlack[] = {0.0, 0.0, 0.0};
static float const cGrey[] = {0.5, 0.5, 0.5};