In 1942, Henri Gamache published his Master Book of Candle-Burning, How to Burn Candles for Every Purpose detailing magical practices involving candles. 

Red--love spells, affection, passion, bodily vigour, sex 

Pink--attraction, romance, clean living

Orange--change of plans, opening the way, prophetic dreams

Yellow--devotion, prayer, money (gold), cheerfulness, attraction

Green--money spells, gambling luck, business, a good job, earth

Blue--peace, harmony, joy, kindly intentions, healing

White--spiritual blessings, purity, healing, rest, cleansing, protection

Purple--mastery, power, ambition, control, command, Prophecy-Psychic awareness, intuition

Brown--court case spells, neutrality, earth, grounding, stability

Black--repulsion, dark thoughts, sorrow, freedom from evil, protection

References to Double Action candles.

Red and Black (Double Action)--remove a love-jinxing spell-Removing Obstacles surrounding Love
White and Black (Double Action)--to return negative energy to the sender-Remove obstacles surrounding certain situations-Uncrossing. 

Green and Black (Double Action)--remove money-jinxing