Actually, tonight the GRS had a bit of orange hinted across the top, but was mostly pale across the bottom. This is different than rare nights where the entire thing is two shades of orange. Oval BA gave only the slightest hint of orange.
What is still striking to me is the difference in hues between the SEB preceding and trailing the GRS. Once you see it, there is no denying the trailing SEB takes on a blue-grayish hue. Not only that, but it extends across the northern edge preceding the GRS, too.
AND! If you look carefully, the southern edge is lined with a darker color, as well. It was so hard to tell, but I have to think that darker lining is the cloud being drawn over the top of the GRS, too. It was so very difficult to tell exactly what color it was crossing the GRS.
AND! Another hint of that belt in the NTZ on the preceding limb! That thing is so very subtle, I really can;t believe I saw it.
AND! Nailed another white oval tonight, one preceding oval BA is A8. I think the count is 5, now. A0 A1, A4 and A5, too.
Couple other interesting features. One was along the northern NEB directly above the festoon. Not sure what to make of it, but it appeared darker and maybe even "not brown." Looks kind of like a barge. There is another faint one hollowing it. The belt wrapping under the GRS is making some progress.
Seeing was about 7/10 with average transparency, at around 1300UT on 19 Dec.
EDIT: Had one of those GAAA! moments. I sketched in a fleeting glimpse of a blue protrusion jetting north from the SEB into the EZ. Starting to notice a few here and there. I waited for it to show again and lost confidence. So I erased it. But there is one there! GAAA!