Freddy writes:

The color disappears when I move the folder to Dropbox. Any solution to prevent that? It seems to work sometimes now, about every second time I add a folder to Dropbox. Another problem is that the folder doesn’t appear colored anymore if I am reading it in Dropbox from another of my Macs. Do Folderol need to be installed on every computer to have it work?

Answer:

The color should work on-your mac. It may not sync between macs. Dropbox’s folder icon sync problem is apparently longstanding.

More than you want to know:

The “dot” is specific to OS X Mavericks and will not be synced by Dropbox as it is part of the file metadata. You can see it from the command line by running “mdls”, e.g.