Yes, tractor paint!
There was at least one for sale on the EE with a receiver that excatlyy looked like how we painted the motor block while restoring old Deutz, Gueldner and Eicher tractors. I would love to see a range report on those! Unfortunately the mentioned thread and stickies do not cover that.
You need pics man! Or at least post a shade of what it looked liked. The T81's are blued, I would have liked to seen a more utilitarian finnish but its better the whatever the refurbed SKS are painted in.