Ok - first attempt at a thread-from-scratch - hope this is in the right place and all that stuff!
Here are my efforts at adding a little extra detail to TFC Hercules - including "CAT" logos that I see on a lot of construction vehicles.
These were done with simple "see through" label sheets, that I used in an effort to give it a bit more of a painted-on look:
(Using the "album" storage facilities here, so these are smaller / more compressed than I planned - but I think you can get the idea
)
Upper Half:
Lower half: