I have an original Timber #234 and my CPO is a rich brown like the one on your machine (not the repro).
I find it hard to believe that they would have had two versions of this CPO.
This is a very low production machine and IMPO and it makes no sense to do two separate printings of the CPO.
Original Timbers are made out of Factory converted Tappers.
I.E. the Timber side and front art are applied directly over the original Tapper side art (on non color side art Tapper cabs). There are some Timber conversion done latter out there, but I think you have to discredit those in this discussion as they are done later by someone who wants a Timber and not factory.
There are are still a few other differences on a factory Timber.
On the back of a factory Timber it should have the original Tapper serial number that was defaced at the factory. I.E. it should be a really high Tapper serial number as it was at the end of the run. That number should be defaced and stamped out. You can still read the number with a little work, but it should be crossed it out by stamping "XXXXXXX" over it. After that the factor stamped a new serial number to the side which is the correct serial number for the Timber.
As I mentioned, mine is number 234. Ive also looked at a handful of other timbers, as well and check the ones in VAPS where people list the serial number as well as the high-low list etc. In fact, every legit Timber serial number that I have seen is a three digit serial number.
Granted I have only seen a small sampling and need a bigger case study, but its pretty interesting.
I have a theory that I've been throwing around. It might be spot on, or I may be totally out to lunch. I suspect since all the serial number I can find are 3 digit, that they probably only made 1000 or so of these. Its not a big case study as I've only seen the serial numbers on a handful of games so it needs more data. Keep in mind that this game came out in 1984 at the end of the gold age right after the crash. People simply were not buying these. I would love to see pictures of peoples Timber serial numbers to either confirm my theory or prove it wrong. Right now its just a theory.
Anyhow, back on topic. Either way, its a relatively rare game that they didn't make a lot of. I don't see why they would have multiple CPOs.