On a whim, I picked up one pack of Mystical Fire that said it’d change the color of the flames on our bonfires. Turns out, it works!
The item I bought was from Wish (my review of Wish) and costs me two whole dollars. I threw in one pack and I didn’t have very high expectations, but it worked great. The package suggested I toss in more than one packet for better colors but I didn’t have more. Turns out I could have bought more, for less per pack, on Amazon. Now I know.
You can get 12 packs of Mystical Fire for about $8 on Amazon if you want to try it out for yourself. These work great and actually change the colors of your flames.