Naturtint Permanent Hair Color 4G Golden Chestnut is one of the 5 Golden shades. Find the right hue for you with Naturtint color chart! Similar options include 5G Light Chestnut Brown and 6N Dark Blonde. You can go as dark as you like in one treatment, but with Naturtint, you can only lighten by one or two shades; more than that can often create unwanted brassy tones.