color HexString2color(char *hex)
{
	color col;
	int rgb, alpha;
	char *end;
	rgb = strtol(hex, &end, 16);
	if(end[0] == ':')
		alpha = strtol(end+1, NULL, 16);
	else
		alpha = 255;

	gr_init_alphacolor(&col, rgb >> 16, (rgb >> 8) & 0xFF, rgb & 0xFF, alpha);
}