Create an empty UIImage of a given size, optionally filled with a given color. Swift.

CreateEmptyImage.swift

func imageWithPixelSize(size: CGSize, filledWithColor color: UIColor = UIColor.clearColor(), opaque: Bool = false) -> UIImage {
	return imageWithSize(size, filledWithColor: color, scale: 1.0, opaque: opaque)
}

func imageWithSize(size: CGSize, filledWithColor color: UIColor = UIColor.clearColor(), scale: CGFloat = 0.0, opaque: Bool = false) -> UIImage {
	let rect = CGRectMake(0, 0, size.width, size.height)
	
	UIGraphicsBeginImageContextWithOptions(size, opaque, scale)
	color.set()
	UIRectFill(rect)
	let image = UIGraphicsGetImageFromCurrentImageContext()
	UIGraphicsEndImageContext()
	
	return image
}

UIImage.getColoredRectImageWith(color: UIColor.black.cgColor, andSize: CGSize(width: 50, height: 50)

If you are suggesting there's such a UIImage method provided by Apple, I don't think so...