White Flash when "dark_mode=auto".

[MintMain21]

In the latest stable release, loading new pages on an invidious instance creates a blank white page while the user-script processes what parameters to apply.

When using an extension like Dark Reader this is irrelevant, but it can understandably be frustrating for some users either unable or unwilling to use such a measure.

#6 would at least partially resolve this, insofar that there would be less frequent occurrences where the script would need to append URL parameters to loading pages.

[MintMain21]

#6 has been fixed. The tradeoff is the "Run at Document Start" option had to be disabled.

For best results of reducing white flashes, it's recommended that "dark_mode=false" be included in appearance settings and an extension like Dark Reader be used to enforce a dark theme.

If anyone has any better solutions, feel free to either bring them up here or create a pull request. Otherwise, I consider this a "won't fix", and something that cannot be properly addressed so long as this remains a userscript and not a browser extension.