Open the Settings app and go to Personalization > Colors, and choose an accent color that matches the shade of blue that you want. At the bottom of that same page, turn on the option to "Show accent color on title bars and windows borders".
This might help you:
https://www.elevenforum.com/t/view-microsoft-store-updates-and-downloads-history-in-windows-11.13161/
https://www.elevenforum.com/t/open-and-use-old-notepad-app-in-windows-11.23889/
Speaking of slowly making your way through, I'm procrastinating finishing Banjo-Kazooie after realizing how big the game really is! Hoping to 100% it one day.
I think the reason notepad's title bar looks so big is because that's an older version of it. The current version of notepad looks something like this:
This may not help you much, but I like to keep the installers for all the software I use in OneDrive so whenever I need to clean install, they are always one of the first things available! You can probably do the same thing with Google Drive or iCloud If you prefer to use those instead. (This...