Action: ColourByLch Play action “CurrentImage” of set “CBsActions” Set current layer To: layer Name: “Toned channels” Select lightness channel Curves Gaussian Blur Radius: 0.1 pixels Set Selection To: all Copy Select a channel Paste Anti-alias: none Select b channel Paste Anti-alias: none Show lightness channel, a channel Select Lab channel Set Selection To: none Set current layer To: layer Mode: linear light Play action “Flat Curve” of set “CBsActions-JacobsLadder” Play action “Zoom” of set “CBsActions-JacobsLadder”