Hi all,
I have checked out all the current available Android Obsidian Widgets and was not quite happy with the customization options available.
So I created a quick widget for my own use where I can change the background and text to my liking until we have an official release of a widget (hopefully).
So if you also want so transparent background you are free to use my widget:
OririIre/Widget: Notes Widget for Markdown Files
If you find any bugs or have any suggestions feel free to drop a comment!