Simple way to minimize the effort while defining color palette for an app.

UIColor+MyApp.m

#import "UIColor+MyApp.h"

@implementation UIColor(MyApp)

+(UIColor *)RGB:(long)hex A:(float)a {
    return [UIColor colorWithRed:((float)((hex & 0xFF0000) >> 16)) / 255.0 green:((float)((hex & 0xFF00) >> 8))/255.0 blue:((float)(hex & 0xFF))/255.0 alpha:a];
}

+(UIColor *)MABlue {
    return [self RGB:(0x12AFE8) A:1.0];
}

@end