Describe the bug
When printing the design info whilst OpenRocket is in dark mode, the rocket design is also exported in dark mode, instead of light mode. In the image below, the dark mode background is only applied to the first part of the rocket view.

To Reproduce
- Set the OR UI theme to dark mode
- Open 'A simple model rocket'
- Print design info (File -> Print Design Info)
Screenshots / .ork file
No response
OpenRocket version
unstable
What platform are you running on?
macOS
Additional context
No response