UIView With Multiple Colors iOS

-(void)drawRect:(CGRect)rect {
    CGRect upperRect = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, rect.size.height * .5);
    CGRect lowerRect = CGRectMake(rect.origin.x, rect.origin.y + (rect.size.height * .5), rect.size.width, rect.size.height *(1-.5));

    [[UIColor redColor] set];
    UIRectFill(upperRect);
    [[UIColor greenColor] set];
    UIRectFill(lowerRect);
}