Breathing color is a form of meditation. You simply imagine yourself inhaling and exhaling the colors. Do this someplace that is comfortable sitting or lying down.
Breathe about twelve to eighteen times a minute until you have a consistent rhythm. Surround yourself in a white light that starts at your head and goes down to the feet and out through the toes. Keep this vision in your mind for about two minutes.
Now visualize yourself surrounded by the intense light of a color your choosing. Breathe in the color and let it journey in through your nose and filling up your entire body. As you breathe out, release what no longer serves your highest good.
Now bathe your entire body in a pure white light for two to three minutes.
You can do this exercise in the morning or at night in the bath. Simply relax and give yourself time to enjoy and visualize the colors that you need to have. Usually, the first ones that pop into your mind are the ones you need.
If you are busy and don't have time for the whole meditation, then find a picture that has blocks of every color within it. Study the picture picking out each color. Stare at each of the colors for a few minutes until you feel like you have had your fill and g onto the next one. Some colors will jump right at you, and others will be a little harder to get.