These lamps are still in use as part of the CES for Cvrt, they are not listed on the CES for Defender or Wolf. They do sell for ridiculous money on eBay, don't know why as they aren't particularly rare.
The colour is correct and the 'lens is actually a shade to keep the light out of you eyes when using it.
A friend of mine who has a militarization shop has quite a few of these lights, but the plugs had all been cut off, apparently the plugs are very sought after by certain classic car owners.
I do have some new plugs available if anyone is interested.