Background inverted in The Restaurant at the End of the Universe by Chat Improvements

[TheHarmonicRealm]

Describe the bug
With the userscript Chat Improvements, the background image on the Restaurant at the End of the Universe and other Sci-Fi rooms is inverted. Happens in Unix & Linux chat, too.

To Reproduce
Steps to reproduce the behavior:

1. Go to the Restaurant at the End of the Universe with Chat Improvements on
2. Look at the bottom of the page
3. See the inverted colors

Expected behavior
This doesn't happen in other rooms.

Screenshots
It is inverted on the Restaurant:

And Unix (bottom screenshot is the normal appearance):

Desktop (please complete the following information):

• OS: MacOS 10.15
• Browser: Firefox
• Version: 70.0.1

Additional context
nice script otherwise!

[samliew]

Thanks, didn't know other sites have a custom bg