The new 1 and 2 are still fine (here) but so were your previous ones, your choice.
For (3) `#ff6f00` is sort of ok, `#bf4b40` does not have much contrast to the grey background of textview, I will still override either with my mid grey `#808080`.
I found the Mint-Y-Dark theme gtk.css and it uses `#404040` as the background for text view, so `#bf4b40` is only a bit redder and a bit brighter so thats why it has little contrast. What does your dark theme use as background?
For (4) `#e92c2c` used as `geany-document-status-changed` I just noticed it is pretty hard to read against the tab background which is `#404040` again, but then dimmed when not the current page (I think, my CSS is not brilliant and the themes gtk.css is complex, but think I found the right entry, and its an rgba so partly transparent, so not sure what the resultant colour value would be). I use `#ff4040`.
Note that as I am already overriding the existing colours, changing the defaults won't bother me, the current ones were unacceptable anyway. I am just trying to be in the place of a user who wants a reasonable experience out of the box and doesn't want to edit geany.css. Maybe in the end we have to merge something and I will send the complaints to you :smiling_imp: