This picture may be better than the previous one. Here it is next to the Dark Cornflower in the sunlight.

I'm happy to report that all is well with the seller. He's a stand-up guy (I never assumed he wasn't) and we agreed to call it "Blue". I decided to keep the insulator and he gave me a partial refund to even out the cost based on the value of Blue instead of Light Cornflower.

Thanks to all who responded!