void image::create_color()
{
    for (int i = 0; i < maxHeight; ++i)
    {
        for (int j = 0; j < maxWidth; ++j)
        {
            int mult = i * j;

            pixelColor a;
            a.R = mult;
            a.G = mult;
            a.B = mult;

            colorMatrix[i][j] = a;
        }
    }
}