Those PDFs are useless.

If you want a purple Steam Controller, you can load Valve's STL into your favorite slicer, 3D print a new shell, transplant the electronics, and you're done.

If you want a purple MacBook, could you do the same with those Apple PDFs?

No, you can't, because it doesn't include any internal topology.

> This repository contains CAD files for the external shell (surface topology) of Steam Controller and the Steam Controller Puck