colorIndex2RGBA   704 ext/gd/libgd/gd_interpolation.c 		return colorIndex2RGBA(c);
colorIndex2RGBA  1147 ext/gd/libgd/gd_interpolation.c 				dst_img->tpixels[dst_offset_y][dst_offset_x++] = colorIndex2RGBA(im->pixels[m][n]);