There are many ways to use color in magick. Here are just a few examples:
You can choose clothing, altar cloths, and candles in colors associated with the intent of your spell or ritual.
You can write spells, incantations, talismans, and sigils using ink or colored pencils in colors corresponding to the magick you are working.
When meditating, you can envision yourself surrounded by light in a color associated with your purpose.
The correspondence table below describes the magickal properties associated with a variety of colors.