Nice! That is a new feature that can be used with the palette icon to style threads and comments 
Add the Hex code after the #.
color=# = text
bgcolor=# = background
Heres some examples:
- #E1F2EB Pale Green
- #FFC1C1 Blush Pink
- #A9D7D2 Seafoam Green
- #FF8D8D Salmon Pink
- #FFDAB5 Apricot
- #7ED8D2 Turquoise
- #FFD700 Gold
- #9D80B5 Lilac
- #E3C268 Mustard
- #FF7B7B Coral Pink
Also, MorphMarket sidebar is now part of the sidebar on here to make navigation between the two as fast as possible.
The header has also had a little makeover and is now transparent
