the paint-runs are really small on a 1/35 scale model, so a certain skill is needed to make it look realistic
TBH, I don’t think you’d want to paint a model of this tank using
actual paint runs — I would try it by spraying it without those, and then adding the run paint with a fine brush.
Tools weren’t always removed either, as I understand it Karl, but I don’t think I’ve ever seen that modelled.
I have, and I would do it again if I were to build a model of a WWII German vehicle in camouflage pattern

But most modellers seem ignorant about the colours of tools anyway, painting them all in wood and bare steel when certainly American ones were dip-painted olive drab at the tool factory. Not sure about other nationalities, but chances are several did it in a similar way.
Something I just noticed in the photo is the “shadow” of light paint to the top left of several of the rivets, especially to the left of the door and above the chap sitting on the jerrycan. Somebody sprayed the dark patches there from the right and below, rather than straight on.
BTW, another thing to note (that I did spot immediately) is that the rims of the roadwheels have had all the paint worn off them where they rub against the track teeth. This was very common on all American vehicles with this kind of suspension/track (so M2, M3, M5 light tanks, M2, M3, M4 mediums, and all their variants), and not just in desert sand like here, but is very rarely modelled because it’s often not obvious in photographs.