spray can tints are ok if you're looking for a cheap fix... but they are 1K paint (meaning there is no hardener/catalyst.. just a reducer or solvent of some kind).. they will look good for a while.. but inevitably will start to fade or just wash off. Putting some red candy concentrate or just red basecoat in some real automotive clearcoat will give you a much more durable 2K (or catalyzed) finish that will last a long time and in my opinion will look 10 times better