Issue:
Right now when using the System / SteamVR Tracker model they default to a black texture. This makes them really hard to see and if SteamVR Tracker model has a different color, like white for example, it can be a bit confusing for the end user.
Suggestion:
Also use the provided Textures and not just the 3D Model.
Attachments:
Here you can see that on my Vive 2.0 Tracker the tracking dots are missing as well as the white blue Vive Logo: