Magic is the act of making your will manifest in the universe.
(Image Source – painting by John William Waterhouse, The Magic Circle)
Unfortunately, magic as seen in Buffy and Charmed does not exist. Magic is about gathering your will, and focusing all your energy to bring about the outcome you are seeking.
Magic uses tools and symbols to align your energies with your purpose.
Colors correspond with certain emotions, feelings, and energies. Same for gemstones, essential oils (smells), musical instruments, animal energies, I could go on.
The most important rule of magic, what you send out into the universe will come back to you threefold. For good or ill. Karma’s a bitch.