Action: LABcolour+grey Ch Duplicate first document Name: “LABcolour+grey Channels” Flatten Image Image Size Width: 25% With Constrain Proportions Interpolation: bicubic Convert Mode To: Lab color mode Select lightness channel Select a channel With Extend Set Selection To: all Copy Select Lab channel Paste Anti-alias: none Set current layer To: layer Name: “la” Hide current layer Select Background Select lightness channel Select b channel With Extend Set Selection To: all Copy Select Lab channel Paste Anti-alias: none Set current layer To: layer Name: “lb” Hide current layer Select Background Select lightness channel Set Selection To: all Copy Select Lab channel Paste Anti-alias: none Set current layer To: layer Name: “L” Hide current layer Select Background Select a channel Set Selection To: all Copy Select Lab channel Paste Anti-alias: none Set current layer To: layer Name: “a” Hide current layer Select Background Select b channel Set Selection To: all Copy Select Lab channel Paste Anti-alias: none Set current layer To: layer Name: “b” Canvas Size Width: 300% Height: 200% Horizontal: left Vertical: top Select layer “la” Move current layer To: 33.3%, 0% Select layer “lb” Move current layer To: 66.7%, 0% Select layer “L” Move current layer To: 0%, 50% Select layer “a” Move current layer To: 33.3%, 50% Select layer “b” Move current layer To: 66.7%, 50% Flatten Image