Where are the brightness/volume icons for BezelUI stored in Sierra / High Sierra? As the title states. I'm using OSDisplay (as a sort of answer to my question here). I've noticed that in Sierra (or so it seems), the OS's icon for the brightness HUD changed some—longer and thinner rays, thinner inner circle, etc. I would like to change the file that OSDisplay uses so that it matches the default icon.

Apparently in the past these images were stored as PDF files in /System/Library/LoginPlugins/BezelServices.loginPlugin/Contents/Resources/BelzelUI/HiDPI, but I do not see them there any more. The Contents/Resources/ folder just contains a bunch of .lproj folders.
Asked on Reddit, was directed to the new location: /System/Library/CoreServices/OSDUIHelper.app/Contents/Resources.