gint color1_r, color1_g, color1_b, color2_r, color2_g, color2_b, min_d, d;

        gboolean gimp_context_get_background (GimpRGB *background);

        color1_r = background[1];
        color1_g = background[2];
        color1_b = background[3];

        min_d = 195075; /* Max value possible is R^2 + G^2 + B^2 = ( 255^2 ) * 3  */

        for (x = 0; x<16; x++) {

                color2_r = vicpalette[x*3]
                color2_g = vicpalette[x*3+1]
                color2_b = vicpalette[x*3+2]

                od = d
                d = (color1_r - color2_r)^2 + (color1_g - color2_g)^2 + (color1_b - color2_b)^2
                if d < min_d (
                        min_d = d
                        color_index = x
                }
        }

        return min_d;

}