I think that some of the images produced have been stylistic. The colours are changed to match a theme. The colour images that actually are part of the
manga are the real colours.
CLAMP do it quite often.  There are some To-babi images with the wrong eye/hair colours (in order to match the colour scheme). The X artbooks also have some 'incorrectly' coloured pictures.
Takeuchi Naoko did it a lot with Bishoujo Senshi Sailormoon images, too. There are absolutely tonnes of images with the 'wrong' hair/eye colours. Of course, there are also a lot of images with 'realistic' hair/eye colours (which seem more of a realism choice rather than a stylistic choice).
As for the lack of DouWata...I think it's a delayed reaction. When
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Fay used his magic in chapter 106 we were all expecting Kurogane to confront him on it. That didn't happen till chapter 112.
 I think it will happen, but CLAMP will get everything else out of the way first so that when it DOES happen, they can focus on it.
Put it this way, would you rather have a quick embarrased thank you in front of Himawari-chan or would you rather have a private, serious thank you when Doumeki is walking him home from school/Yuuko's (or similar scenario)? I vote for option number two.
All that subtext can't be for nothing. We just have to be patient.