My favorite color today is purple, or more specifically violet red. So my new beaded belly dance costume will be violet red. But for now I'll start with a pair of earrings. Do you make jewelry specifically to match your belly dancing costumes? Hair ornaments? Other doodads. Usually if you make those in your favorite color you'll wear them time and time again.
The other end is to make neutrals. That's because they go with everything. Neutrals are colors like gray, taupe, black, ivory, white, and navy. They play well with more brilliant colors.
Keep in mind stage lights can have bizarre effects on color. And a color will look a lot different at an outdoor venue than it does indoors at night. It helps to take some quick snapshots of your costume during the dress rehearsal to see how the lights are effecting it.
