When Callie Baldwin, an Independent Artist at The Mod Hue in Tampa, FL, got a visit from her most color-daring client, she knew she was in for another creative color jump. "This client in particular is my fun girl," she says. "We have colored her every spectrum of the rainbow and have been on a journey of taking her platinum from dark violet to achieve petal pink." And like most of you know, this sort of journey is definitely not a short one. You and your client need to be all in. "The…