I was at the south employee lot at DTW when I saw a 737 approaching to land on Runway 21R. At first I saw the alternating landing lights so I thought it was a Southwest. Then as I saw it come in closer it was blue in front so I just automatically thought that it was Lone Star One or Triple Crown One. The plane landed and turned off on the taxiway at quite a distance when I noticed that it was not Southwest at all. It looked from a distance to be a 737-300.
The plane was all blue, about the color of the blue on the new Southwest colors, but the whole fuselage was blue. The engines appeared to be white. The tail was blue with some kind of red insignia on the tail. I couldnt tell what it was.