UIColor shorthand which allows to define colors directly from RGB elements (0-255) instead of floats.

UIColor+Shorthand.h

#import <UIKit/UIKit.h>

@interface UIColor (Shorthand)

+ (UIColor*) colorWithR: (unsigned char) r G: (unsigned char) g B: (unsigned char) b A: (float) a;

@end

UIColor+Shorthand.m

#import "UIColor+Shorthand.h"

@implementation UIColor (Shorthand)

+ (UIColor*) colorWithR: (unsigned char) r G: (unsigned char) g B: (unsigned char) b A: (float) a {
    NSAssert(r < 256, @"UIColor R > 255");
    NSAssert(g < 256, @"UIColor G > 255");
    NSAssert(b < 256, @"UIColor B > 255");
    
    return [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a];
}

@end