While the emojis are no longer blinding, black emojis on a very dark gray background make it a bit hard to pick one.

Also, when going back and editing a post, comment, etc., the original text is dark on dark - or at least it was yesterday the last time I edited.

Just checked. When you click on Edit, it's white on black. When you click in the box to actually edit the text it goes dark on dark.

Added:

• x075 Posts: When editing a post after clicking in the text box, dark text on a dark background is displayed
  set text to #fff
• x076 Posts: Set emoji menu background to #3D3D3D
• x077 Posts: Set emoji category icons to #fff000
• x078 Posts: Set Photo, Video, Location, Emoji hover color to #171717