What do the issue colors mean in Rapid Board?

Question

I'm responsible for keeping track of my team's work and coordinating with the QA teams.  The Rapid Board looks like a good way to get an overall snapshot of all of our work.  One thing I can't figure out is what the colors next to each ticket mean.  Since it's kind of a busy screen, not knowing what the colors indicate is very distracting.  Also, can I change the colors at all?

Here's an example:

sclowes · Answer

In versions before 6.0.1 when this became configurable the colors represent the issue types.

Cheers,
Shaun

Sharon Conger · Answer

Ah, if I don't have the Card Colors tab, is that a privilege thing?  I should have added that we're on Jira 4.4.3, sorry about that.

Karie Kelly1 · Answer

We are on the lastest version since we are ondemand. However, it just recently appeared for us. You might see if it does equate Issue Types or Priorities - I believe the default was Issue Type