Okay, so I've uploaded a small update to this editor, mainly to fix the issue with the previewing of large images. So now large images don't cause an overflow and crash, and the preview window can now be resized and scrolled around using the arrow keys.
As for VisualPrefs, I don't actually think that's an issue as the screen is opened as private, not public, and so VisualPrefs leaves it alone with the default imagery.
I added some colour naming and identification, but to be honest it was actually quite slow on an 030 and made using the program feel a bit clunky, so I left it out. Perhaps in the future I'll come up with a more efficient way of identifying colours and use it instead.
Thanks for the feedback everyone
