Can I update the CSS file in a purchased theme?

I'm really enjoying the DARCSS theme I purchased from the store, but today I was working on some javascript code and the search feature is basically unusable. The background is dark and the highlighted search results are a dark dark blue... practically invisible.

I think I found the appropriate color value in the CSS file. Can I change this and then re-install the theme? (I changed c3addon to zip, found the css file and changed the color, then renamed the file.)

I tried it and got a bunch of errors. So then I considered uninstalling DARCSS so I could re-install it, but got a warning that any file saved with DARCSS will no longer load if I uninstall the theme...

You should try contacting the author of the theme.

> but got a warning that any file saved with DARCSS will no longer load if I uninstall the theme...

What??? Is this true? How can an editor theme prevent projects from loading?

Yeah, I tried reaching out to the author a few weeks ago but he hasn't gotten back to me.

Regarding the warning, it's actually a more generic warning in the Addon manager. When I tried to uninstall DARCSS I got this prompt:

"If you uninstall an addon, you will no longer be able to open projects that use it. Are you sure you want to uninstall the addon "DARCSS"?