Use boric acid or borax for green flames
Use copper chloride for blue-green flames
Use strontium chloride or strontium nitrate for red flames
Use lithium chloride for crimson flames
Use calcium chloride for orange-red flames
Use sodium chloride for yellow flames
Use potassium chloride for lilac flames
Use copper sulfate for blue flames
Use a color-changing fire powder or gel designed for campfires
Apply the chemical to a fire-safe material before ignition
Use only in a well-ventilated outdoor area
Keep away from flammable liquids and enclosed spaces
Follow all product safety instructions and local fire regulations