Recently, Apple has made some very noticeable changes to the color scheme of their products. Specifically, the Gold and Space Grey.
The 2017 iPad Pro 10.5-inch were made in a more traditional "Gold" color with a standard shade of yellow.
Apple has since redesigned the gold color scheme and the iPad Air 3 now carries a pinkish tone as opposed to a yellow tone.
A very similar change recently happened to the Space Grey color Scheme. The release of the iPad Air 3 10.5-inch featured a very dark tone adjustment to the more traditional, lighter color Space Gray.
As these color changes have been repeated on other newly released iPad's, Brydge has followed this color change, to match their new colors/tones.