Suggested Gadgeteer identifier

So i was reading the .net module builders guide v 1.7 On page 34 it talks about 3 sizes for the Gadgeteer Graphic, yet i did not see where to get it? Or what the sizes are. did i just miss it ?

You right provided images is the only reference. I just created mine to look similar.

Btw GHI has eagle files for some of the modules with the G logo, so that can be used for consistency.