Color the tab itself too

[dogfuntom]

[dogfuntom]

Custom Document Well does this. But how? All PPT's source was opened except this one. Why?

[dogfuntom]

And the answer to why above is here: microsoft/VS-PPT#52

[dogfuntom]

A better example is Minimalistic View because it has source code opened.
And yet another possibility here: https://social.msdn.microsoft.com/Forums/en-US/091006e3-f35f-4e84-a13f-926376e9a0f9/tab-colors-change-in-extensibility It's 2013 but seemingly mostly true.

[dogfuntom]

So, there are three options:

1. Rebuild the whole style like MV does. But it's too hacky and it seems like I can only change all colors.
2. Find tab header control via reflection like suggested in the Forums link. But it's too hacky and it's hard to determine how tab header controls and files are linked.
3. Wait for futher news.

Option 3 seems best so far.