User blog comment:Groxiuos/The Whimsical Tragedy of Mr. Sunshine/@comment-1070010-20111117040325/@comment-1070010-20111117203737

I kept an individual photoshop document for each panel, which contains all of the coloring layers... I could go back and modify the Hue/Saturation sliders for individual layers, but then I'd have to slowly replace all of the panels on the main comic page, which will be tedious...