Why would it be? It could easily do things like- purple video of jacaranda flowers in bloom with peaceful music, then purple video of a guy wearing all purple giving the camera the finger while death metal plays.
Color says absolutely nothing about a video's contents.
It's not just colour it's colour within what the algorithm already thinks is nice. If you only watch 4hour fish tank videos you'll only get 4 hour fish tank videos, just with purple fish. It's not like you have to just play this live either. Just generate the videos and add each non offensive one to a Playlist to run at the office. Sure it's not like a killer feature, I also doubt it took much effort at all to create.
The algorithm is far from perfect. And how would it know you were planning for a reception and wanted those kind of videos if you normally watched death metal videos?