Color.m

#import "Color.h"

@interface Color ()

@property(nonatomic, retain) UIColor *value;

@end

@implementation Color

+ (instancetype)withColor:(UIColor *)value {
    return [[Color alloc] initWithValue:value];
}

- (instancetype)initWithValue:(UIColor *)value {
    return [super initWithValue:value];
}

- (UIColor *)get {
    return self.value;
}

- (UIColor *)withDefault:(id)defaultValue {
    return [super withDefault:defaultValue];
}

- (NSString *)description {
    return [self hexStringFromColor:[self withDefault:nil]];
}

- (NSString *)hexStringFromColor:(UIColor *)color {
    const CGFloat *components = CGColorGetComponents(color.CGColor);

    CGFloat r = components[0];
    CGFloat g = components[1];
    CGFloat b = components[2];

    return [NSString
        stringWithFormat:@"#%02lX%02lX%02lX", lroundf(r * 255), lroundf(g * 255), lroundf(b * 255)];
}

@end