Periwinkle, peridot, plum. If it’s a color that can be found on the spectrum, there’s a colorist who has turned it into a gorgeous shade for hair. Cue applause for your creativity and skills. But can we get real for a moment? For every one out of 100 clients who happily sports your genius seafoam green and silver creation, the other 99 yearn for what haircolor clients have always wanted—color that looks shiny, realistic, flattering and, in the words of one recently overheard client, “like my natural color only better.” So as the season shifts, we invite you…