The Soho produced bronzed coinage was typically consistently coloured. Taylor's restrikes showed much more variation in the quality of the bronzing. That is what I was showing earlier with the P1161 with mottled toning, which was one of his earliest attempts made before the dies had the rust polished off the surfaces.
The Moore patterns are a separate issue, but given they were produced at various times over a 26 year period, you would expect some variation for the different die states in the same metal. Moore's bronzing appears to be a bit darker than Taylor's, albeit from a limited sample size. Given Moore's affidavit to the effect that a specific number of coins were struck in specific metals on specific days in September and December 1886, it should be possible to identify the copper and bronzed pieces purely from those with Peck's obverse B. The coronetted head P2135 is only known in copper. Again, that should aid differentiation if you had them side by side.
You also have to consider whether the surfaces seen are a result of storage conditions. I can think of a few patterns with slightly impaired surfaces, which is why I said you can't take what I said as definitive.
FWIW, my P2106 has a couple of tiny light blotches, but is certainly not copper as the majority of the surface is better, being evenly toned.