Edit 1:
Actually it is possible to change the heatbed layout directly within PrusaSlicer, so the below mentioned steps are not necessary anymore.
Original-Description:
Just a test - is it possible to change the foreground layout of the displayed heatbed in PrusaSlicer v2 ?
Yes it is and it is simple too.
My findings, The Heatbed is beeing displayed by combining two files.
Finding 1) Inside folder ...\resources\models\ the backgound image of the heatbed as an stl file format
Finding 2) The foreground (Lines/text/etc.) is within Folder ...\resources\icons\bed\ as an SVG File format.
As my printers are based on the mk3s my PrusaSlicer profile is pointing out to mk3 configuration. I did some changes on the mk3.svg File (original named by using Inkscape. After a restart of PrusaSlicer the new foreground is diplayed :-)
I included some layouts in the zip file. Actually I only tested Windows PS-Version v2.0.0 but it should also work with mac version too. Just replace the svg file by one of the included files. I've included only mk3 layouts and tested them.
To redo this on your PrusaSlicer just do the following :
Regards
The author hasn't provided the model origin yet.