Modified Acrylic theme for personal use, mainly to match well with the Windhawk translucent themes. It's not perfect but it works :P
(same directions lol)
- Download the WinUI3.xaml file above, and save it to the desktop, or any other easily accessible folder on your pc. Right click the file, and copy, as we will need it later on.
- Open Flow Launcher using the shortcut customized to open the search bar (by default, it is alt + space).
- Type Flow Launcher UserData Folder and press enter on your keyboard.
- A File Explorer window should then open. Open the Themes folder.
- Paste the WinUI 3.xaml file you copied earlier.
- Restart the flow launcher and enjoy the new look!
If you install the translucent-windows mod in Windhawk, you can get it to look like this:

This works very well in a translucent style setup: