I've had some fairly positive results recently with a non-airbrushed WW2 German cammo scheme - something that has frightened me for years before finally getting bold enough to try and work out how to do it properly.
The vehicle paint scheme starts with a base spray coat of PSC Dunkelgelb patched up with Vallejo Middle Stone from the WW2 German Tank set, which is an almost indistinguishably close match.
I then did the stripes as a two-layer paint job, starting with a broader stripe using a 50/50 mix of Middle Stone/Refractive Green for the green and Middlestone/Chocolate Brown (both in the Vallejo 6-bottne German WW2 AFV set) followed by a narrower central stripe of the sdame colour but using just the Green/Brown paint as-is.
They still look a bit odd at that point, but once they are finished with a fairly robust all-over drybrush of Middle Stone it seems to tone the 2-tone stripe painting down a lot and blends the colours in quite nicely.
Tracks are German Track Primer from Vallejo, and I inked the wheels with Military Shader from Army Painter (although I think any brown-ish wash would do just as well)
This is a Pendraken StuG - I suspect from before the remodelling of the range - with some extra tank riders and a replaced barrel (as I lost the original stubby one when I was stripping the old paint from it!)

The cammo scheme is clearer on these Hanomags

Not as scary to do as I feared - although I do still have quite a few more to do!
More pics at :
https://madaxemandotcom.blogspot.com/2021/01/10mm-ww2-refurbishment-project-begins.html