Isolate part of a layer with a mask, then try a color treatment that you can revisit. This approach keeps the source artwork available while you refine the result.
Open an editable document with a raster artwork layer. If you only have a local imported image, save a layered project before leaving the session.
Keep The Subject Visible
Disable the mask temporarily to compare against the full source. If you delete the mask, the artwork layer remains.
Try A Color Treatment
The subject mask and the color adjustment serve different purposes. One controls visibility; the other changes appearance. Keeping them editable makes the next revision easier.
Save The Editable Version
Choose More > Save for a shared document and check the result. Download a .vspixels layered project if you need a separate editable copy, then export a finished image as needed.
If the adjustment affects more of the composition than intended, review its stack position and mask. See Layers And Masks and Color And Adjustments.