@jkallmeyer Really cool images and story behind them. I agree with @egardner that the unaltered specimen is much better – the altered one looks fake and kind of like a form of henna but I agree that less trained eyes may not realize this. Very similar to the manganese dendrites that fool a lot of people into thinking they are real fossils, Mark Wilson wrote a good post on his blog (click here) about these pseudofossils (also from Solnhofen!). With proper cleaning, lighting, and probably whitening (or wetting) the specimen would look much better.