That UAL livery is GREAT.
This scheme is not anything unbelievable, since it mainly stems from the new UAL logo which we've all seen a million times. But seeing this in living color is just sweet!
Things to consider:
1) This a little bit like bmi. Consider adding a red stripe to separate the blue/white on the fuselage. I think it gives it a more bolder, distinct United appearance.
2) I think it is maybe going a bit far, but you could get rid of the orange completely. I don't know why United ever chose this color. It is in a sense a wild color that usually goes well with only black, white, and other wild colors. The scheme looks very striking without the orange.
3)Try putting the U on the engines. See how that looks.
4) YOU MUST PUT THIS SCHEME ON THE 777 FOR US!
5) Send this to UAL. Just email it to any old Joe in customer service. They will probably be glad to help you find where it needs to go.
Take a look: Sorry I screwed up the engine!
http://members.nbci.com/e4meserver/ual.jpg
Thanks for reading.
-Shawn