Guys, thank you very much for all the nice words. I am realy surprised to see this thread pop up again.
J-hulk: Not necessary my friend. Here is the pic from where I based my scheme. Actually my blue is much darker (after weathering) than what is shown here in the ref pic. My yellow is also a lot lighter.
Funny thing I noticed. When I cleaned up the background...I accidentally erased the antenna of the tank. LOL.
Again thanks to all.