TruColor™ “Black” Gel paste Powder is made with a fruit juice anthocyanin and requires a neutral to basic pH to get a “Tru” black shade. A small 5 gram jar will color ¼ pound of buttercream icing made with real butter and cream or water to a deep black shade and up to ½ pound of icing a grey color that will darken to show a black shade overnight. If your fondant has Acetic Acid or the shortening in your buttercream icing is stabilized with Citric Acid you will need to bring up the pH by adding small pinches of …