Night mode

[artur-borowiec]

Is your feature request related to a problem? Please describe.
If an app is displayed in dark theme, the colors are dark. When user opens a PDF, then it's really bright (white) so the color scheme is inconsistent.

Describe the solution you'd like
Some other libraries have nightMode flag, which automatically inverts background/text colors for dark theme.

Describe alternatives you've considered
If a simple bool flag can't be used, please consider passing parameters like pageBackground and textColor.

[github-actions]

Thank you for creating your first issue. We appreciate your help in making this project better. We will look into it, and get back to you soon. Need help or want to discuss this issue? Join our Discord community here to ask questions and discuss this issue live!