You can cold steep things like black malt or roasted barley to get color without bitterness. Advantage of that is you can quickly boil the steep water to sanitize then add it to the fermenter to the color you want.
Two ounces of Carafe-III thrown in just before mash out.
See here: http://www.bertusbrewery.com/2013/06/honey-red-aka-emma-stone-ale.html for a color reference