rainbow noise overly to add subtle texture to your art.
This is an auto action, if you don't know how to use auto actions, go to the following link: https://www.clip-studio.com/site/gd_en/csp/userguide/csp_userguide/605_action_plt/605_action_plt_ope_action.htm
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The layer is set to 12% Overlay.
If you want a stronger effect, increase the percentage.
