Mostly silver, white and black contrasts look best with radiant orchid color. (latestasianfashions.com)
Circular shape in radiant orchid purple will add a playful pop of color against classic navy, soft pink or denim blue. (polyvore.com)
Since you probably don't want to run to your nearest salon and get a full head of radiant orchid like the lovely ladies above, consider a more temporary solution like Streekers! (thefashionablehousewife.com)