Just trying to get new ideas. Here's what I do:
- Turn the title of a book blue, based on an 'is it read yet' yes/no column. Blue is yes, black is no.
-Turn the format column red if it has any other format than mobi.
-Turn the title green if I haven't set the 'is it read yet' value -- so, a newly-added book is always green until I do that.
So that's me...which I know is pretty sparse usage of the feature. Ergo, this thread!