When colored drinks turn white, bleach can be used, and the common bleach is hydrogen peroxide. Hydrogen peroxide is a strong oxidant, which can oxidize and decompose organic matter, thus making colored drinks white. The specific operation method is as follows:

1. Prepare hydrogen peroxide and drinks. Hydrogen peroxide can be bought in pharmacies or supermarkets.

2. Drop an appropriate amount of hydrogen peroxide into the beverage, and be careful not to add too much, so as not to affect the taste.

3. Stir the beverage and thoroughly mix the hydrogen peroxide.

4. Wait for a period of time, about 10- 15 minutes, so that the bleaching agent can give full play.

5. Rinse the beverage, rinse off hydrogen peroxide and other impurities, and then stir again until the color turns white.

It should be noted that bleach is a strong oxidant, which is corrosive and must be used with care. Wear gloves and masks during operation to avoid contact with skin or inhalation of bleach. At the same time, do not mix hydrogen peroxide with other chemicals to avoid dangerous reactions.