Gridfinity 4x2 Filament Swatches Container Stackable lid

I remixed the original lid and attempted to make it stackable. Unfortunately the measurements of the box and swatches come out to be just a hair over 5U, so I decided not to add bulk to the lid, making this it's not exactly modular in height, according to the gridfinity standard.
 

Use arachne when slicing, due to the thin profiles at the base of the print!

I remixed the original lid and attempted to make it stackable.