take 1 cup of warm water in a glass.add 1 tbsp salt,1 tbsp boric acid  stir it thoroughly again add 1 tbsp of boric acid and stir.leave it for 24 hours . it will form wax .now make candles.they will produce green flame while burning
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To make the candle flame in green ----------. Though we know that candle is traditionally burn with a red -- orange flame☆☆☆ ... NOW YOU CAN CHANGE THE RED --- ORANGE FALME INTO GREEN BY making slight tweaks to the wick itself.. ADDING EXTRA ITEMS TO THE WICK -- SOAKING PROCESS IS A VERY EASY METHOD TO CHANGE THE COLOUR OF FLAME.. you can try it..