Another Theme. I call this All Hallows Eve, because of it's copious use of light pinks and vibrant pastels.
The quickest way to add it would be to unzip the file, Open TheBrain 9 and choose Help > Open Log Directory. Go up one directory level and you'll see Themes. Put the unzipped file in there.
I'm also happy to report I think I've got the theming out of my system for a bit. We now return to the normal Bug Reports and Feature requests.
Update: Adjusted so you can see the selection when choosing a thought from Instant Search.
Update 2: Scroll Bar 98% less garish