"The bracelets are more than just a bunch of cute colors. The two contradictory colors show that even the smallest differences are what make our own colors shine brighter. The blue bead cannot help that it is a different color and cannot change itself. It breaks the pattern.
Without the odd bead, the world would be an endless, boring, binary pattern."
Now, not every bracelet has a blue bead as its different color - one of mine has an orange bead as its unique one - but most of them do. Betsy's bracelets really took off at our high school - I think every student and faculty member has at least one by now, and I think she's promoted them a bit at our lower school and middle school. It's a cool project, not for the subject matter - bullying sucks, and there are loads of campaigns against it - but for the way she has chosen to handle the subject itself.
While the bracelets aren't really available over the internet, on her bracelets page she has a video demonstrating how to make them, and what with. They're cheap, easy to make and explain, and generally a good thing.