Having done many 'tiger'-style finishes before, my guess would be that copperhead is dyed brown, then sanded back and either left as-is, with the lighter colour coming from just the slightest hint of brown dye left in the wood, or dyed with a very diluted brown dye or brown-yellow mix, possibly sanded back again. The low contrast suggests each dye stage is evened out and sanded relatively softly. I would expect to do a finish like that in 2-3 passes, perhaps 4 if the figuring of the wood is particularly well-defined.
Tiger's eye is a classic Gibson finish (though they typically go much lighter on the burst) and is done by first dying black or dark brown, sanding all the way back so the dye only remains in the absolute deepest grain, then dying with a much brighter yellow or orange dye. The high contrast suggests each dye stage is done very strongly and also sanded back very severely. It takes me 5-6 passes to get a finish like that.
A plain brown dye finish shouldn't be sanded back more than once. That is how I expect Warmoth does it, since a flat dye finish with more passes gives a much more 3D look than Warmoth's flat dye finishes typically produce. I doubt they shoot transparent brown over the top of it, because that would hide the grain far more and rather defeat the purpose of dying the wood. They undoubtably do use transparent brown for those burst edges on the copperhead and tiger's eye finishes, though. You can burst with dyes, but it's very time-consuming.
As for judging photos, it's a tricky one because any good product photographer should be using a colour reference and a light meter calibrated to their camera, so their exposure, white balance, colour rendering and contrast should be absolutely print-perfect. However, having recieved four Warmoth bodies before in which the finish was a very different shade to the photographs, I find Warmoth's photographer is leaning towards a much cooler white balance or cast than is actually accurate, which also can give the impression of more clarity or contrast. They may be doing this intentionally to suggest more defined wood grain, or it may be accidental if they are not using a properly calibrated monitor and are over-correcting for their own screen. As such, I do find it hard to judge anything based on Warmoth's photos. I would expect the copperhead finish, in person, to be duller and both the copperhead and tiger's eye to be more orange/brown than those images suggest. It won't be a huge difference, though, since colours closer to amber don't shift appearance as much. Colours such as purple and turqoise, however, shift much more; Warmoth's photos of any purple-finished guitar are incredibly different to the product in person. (Unless you also have a monitor wrongly calibrated in the opposite direction to Warmoth, in which case you may have blindly lucked into seeing their photos in a more true-to-life fashion.)