setColor

gistfile1.m

- (void)setColor:(UIView *)v
{
    static int i = 0;
    NSArray* colors = [NSArray arrayWithObjects:[UIColor redColor],[UIColor blueColor],[UIColor yellowColor],[UIColor greenColor],[UIColor purpleColor],[UIColor blackColor],[UIColor lightGrayColor],nil];
    [v setBackgroundColor:[colors objectAtIndex:i]];
    i++;
    if (i>= [colors count]) {
        i = 0;
    }
}