Easily identify images passed to Pixelmator for edit

[reb]

I use 'edit with Pixelmator' option from Photomator when I need to use specific edits not yet supported by Photomator. After edit, the linked file icon appears in Photomators browser (same icon as if edited in PhotoM alone) It would help if the icon following Pixelmator edit was different so that I could easily tell which app to open the image with for additional edits.
Thanks for a great set of apps!