Color Samplers
Since yesterdays shortcut had to do with the Eyedropper, it makes sense to me to follow with shortcuts for the Color Sampler tool. With the Eyedropper tool selected, Shift-click in the image area to set a Color Sampler. With the Eyedropper tool or the Color Sampler tool selected, Option (Mac) / Alt (Win) Shift-click on the Color Sampler (the icon will change to a pair of scissors) to delete.
