I've had a couple of Merkels in the past and still own a 47E 20 ga but certainly don't profess to know a lot about them.
However, I've seen a 147CL on sale by a dealer here on the Web about 10 or 12 months ago--a 12 ga, as I recall. As you've already noted, the CC is not at all typical of Merkels; almost an aqua color, lighter and brighter than the usual Merkel CC. And the stock was a good deal lighter (what I, as a novice, would call blond) than typical Merkel wood and with a lot of chocolate swirl. Actually, that combination of CC and wood color for some reason turned out to be fairly attractive, to my eye anyway.
As I recall, the dealer made mention that this gun was some sort of special (limited?) edition and, so, was demanding a premium for the gun. This particular gun appeared almost new and I'm left with the impression that production was fairly recent.
I don't know if this helps but....
Granby