bouncing off the previous reblog, if you want to create a chromatic aberration effect in clip studio paint, the steps are the same but the layer mode you want is darken as opposed to ‘shade’.
I just made a little auto action which will set up the layers for you:
You can download it here, to use it open the auto actions window (window > auto actions), and right click > import set…
alternatively you can drag the file into the auto actions window.
and while on the subject of auto actions, you can create a shortcut for them by going to file > shortcut settings…, then choosing auto action from the dropdown