Premiere Pro :: Yellow Preview Bar With ProRes Clips?

Even though I've made sure that my sequence settings are exactly matching my clip settings (ProRes4444 or 422HQ) I'm getting a yellow bar over my sequence. 
 
I'm working on a 2012 Mac Pro running OS 10.7.5.  I downloaded Premiere Pro CC earlier today; I thought I'd play around with it to see how it compares to FCP7.  Most of my NLE usage is very simple, just assembling sections of motion graphics and 3D animations rendered out of After Effects in the ProRes 4444 codec.
 
The "New Sequence from Clip" function isn't behaving as I'd expect.  The comparable feature in FCP creates a sequence that matches all aspects of the selected clip (size, framerate, codec, etc.).  The Premiere implementation appears to only match the sequence size and framerate to the selected clip.
 
If I create a new sequence from a ProRes clip, or tell the sequence to match the clip, I'd expect that clip to be sitting in my timeline with no bar of any color.  But I get a yellow bar.  When I go to Sequence Settings I see that the editing mode is Arri Camera, and the Video Preview is greyed out on an MPEG format.  I have to go to Custom and manually select Quicktime, then specifiy the matching ProRes codec.  Shouldn't those wrapper and codec settings be matched automatically too when I've specified that function?
 
That said, if I go in and manually match the codec settings to my clip I still get the yellow bar.   If I select another sequence and click back on the new sequence the yellow bar is gone.
 
I'm assuming that this yellow bar issue is a display error of some sort, because if I export the sequence with "Match Sequence Settings" selected the export happens very quickly as I would expect with a Smart Render-compatible sequence.