I'm seeing a lightbulb icon/graphic on top of error messages that I'm seeing on my web site. The error message isn't the problem, because it's just saying that the user needs to log in. But the light bulb is covering up the first word in the message. I can't seem to figure out where the light bulb is coming from, and/or how to turn it off.

Is it a feature of the Sky theme? When I switch to Garland, the css is calling for a red alert icon, which appears just fine. With Sky as the default, the red alert icon is not there, but the light bulb is there in it's place. 

<div class="messages status">  <div class="icon red-icon alert-icon"></div>

Any tips on how to get the red icon to work in Sky, or how to eliminate it, would be appreciated.