[Catalyst] Provides access to macOS Accent Color

UIColor+AccentColor.m

@implementation UIColor (AppleAccentColor)

+(UIColor *)CATALYSTAccentColor
{
	BOOL hasAccentSet = ([[NSUserDefaults standardUserDefaults] objectForKey:@"AppleAccentColor"] != nil);
	
	NSInteger systemAccentColor = [[NSUserDefaults standardUserDefaults] integerForKey:@"AppleAccentColor"];
	UIColor *returnColor = [UIColor systemBlueColor];
	
	if (hasAccentSet)
	{
		switch (systemAccentColor)
		{
			case -1:
				returnColor = [UIColor systemGrayColor];
				break;
			case 0:
				returnColor = [UIColor systemRedColor];
				break;
			case 1:
				returnColor = [UIColor systemOrangeColor];
				break;
			case 2:
				returnColor = [UIColor systemYellowColor];
				break;
			case 3:
				returnColor = [UIColor systemGreenColor];
				break;
			case 5:
				returnColor = [UIColor systemPurpleColor];
				break;
			case 6:
				returnColor = [UIColor systemPinkColor];
				break;
			default:
				break;
		}
	}

	return returnColor;
}

@end