DaysGUI is a Fabric mod that adds a toggleable display that shows you your coordinates. You can configure the color and position of the display. It has a keybind to toggle the visibility of the display, that defaults to V.
This mod requires these 2 mods as well:
The display with the default config:

The display with no shadow:

The display with a different color:

The display with inline set to true:

No files available for download.