Color & Gradient

The studio kit's colour module, live — a saturation/value picker with hue and alpha rails, eyedropper and shared recents; a hex field in the 28px shell; and a gradient picker whose trigger is the preview, with a searchable preset shelf (337 uiGradients, injectable), per-stop alpha and a rotate intent. Studio-only vocabulary: it lives here with the Studio page class, not in Components.