Professor Boots' original model has pronounced horizontal stripes on each side of the dump bed. But these can only be printed in a different colour when using an AMS or other automatic colour changer.
Thanks to Crab's remix, we can already insert a different colour lettering into the text on the side of the dump bed without an AMS. With my remix, you can now add different colour stripes.
I modified both PBs' original dump bed, as well as Crab's improved one. Choose whichever version you like best and just print the dump bed in a different colour from the stripes. For the different colour lettering, see Crab's original remix.
My thanks to my buddy Kaiio for helping out with some of the CAD work.
The author remixed this model.
The 2 horizontal stripes of each side of the dump bed have been cut out to print as individual parts, to allow using different colours without needing an AMS.
I've made this modification both to the original Professor Boots' model, as well as to Crab's excellent remix (which fixes some issues and adds a few features to the dump bed)