
Also it was purple a few moments ago. I disabled all location services except that one and you'd be surprised how often I see the triangle show up in my status bar at random times. It uses the GPS and drains the battery.
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Odd suggestion but what time zone is your phone set to?
Actually, correction from the above. In settings -> general -> date & time I have it set to auto and it puts me in New York.
However in settings -> privacy -> location services -> system services I have setting time zone via GPS disabled.
I almost forgot there were two separate settings there. The former uses network tower information (I assume), the latter uses GPS in the absence of a network signal (also an assumption. I really don't know) but in reality the latter uses the GPS quite frequently regardless of where I am or what I'm doing with my phone.


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Edit: If you're not a developter why do you have it?
Because I love technology and gadgets and iPhones and Apple! I've always tested beta OSes going back to Windows 98.
I don't complain when things go wrong, but I do share information with the developer through the provided channels if possible and with other testers.
I was just surprised that there's a bug with something as simple as an alarm clock program!
And as we all know it's not the first time Apple had problems with the iOS clock app.