As the Chair of the OASIS Emergency Management Technical Committee and home for CAP, I must agree it is a simple and powerful Standard, and yes, beautiful ;-)
Our committee is currently considering an action from the 2011 CAP workshop to specify a CAP logo/symbol for use on maps and for CAP feeds. This will be a topic on our agenda for the 6/21 meeting. If you have any thoughts or input you would like to share, we are happy to consider it. Of course, any contributed work must be contributed free and open.
Cheers,
Elysa