Color as viewed on individual monitors is notoriously unreliable. In addition, "cinammon" color  on mohair is very much in the eye of the beholder. It was not a true color on early Steiff bears and just happened serendipitously when mohair manufacturers would send mohair to Marguerite Steiff that had ended up in a funky shade. This actually annoyed her and there is at least one letter on record where she writes to the mohair manufacturer complaining about it. Because bears occasionally ended up with these unusual shades (cinammon and apricot), collectors decided these were desirable. I can look in my Sortiment right now and see bears listed as "dark brown" that look more like a light brown to me. Shades of brown have a lot of variability and are subject to each person's interpretation.

All that being said, auction photos are also taken by individuals and they are taken with different cameras and under various circumstances. The photos that you posted look like the person tried to avoid using the flash and instead increased the exposure time. A flash would have lightened the bear and sometimes will also light up the backing underneath. A longer exposure time probably can deepen the colors a bit.

Your best bet at guessing at the bear's "true" color would be at a professional website. However, as I have found over and over, buying bears on eBay means sometimes you are not sure what you are getting until the moment you actually receive it and hold it in your hands. That's the risk you take with on-line auctions as opposed to buying on-site where you can handle it before you buy.

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