Hi Dan,
I think the "blue" is very impressive and popular. I love it, too. It was a table full of them at a bird show that really got me into the IRN. That said, the individual I chose happened to be green, and I "settled" for him because he was the particular individual bird I wanted to bring home. Older bird in a disadvantaged situation, rehab candidate, clear opportunity for me to do certain good, etc. In short order I was convinced no blue bird could ever be prettier than my perfect little green guy. (I think this happened on the long car ride home!) Once it's your bird, you see it with your heart, not so much your eyes. So good luck, truly, finding your "blue" bird, but if you, too, have to "settle" on another colour, do it with confidence. It'll be OK!
-MissK