@Russell... It would be nice to see your cards... Perhaps posting a pic here would be nice for those who don't use social media such as Facebook...
I have another ultimate question... When will the people not involved with kickstarter be able to purchase your Americana Deck... You said February... It passed... You said March... March is over... I understand there were issues with the Revision Deck and people still may have not received their orders, but I believe you stated that the kinks were ironed out... Perhaps allow those who like the Americana deck to start placing orders - Just a suggestion...
That entire issue is in the hands of the USPC, not CCCC. Russell did what he could on his end and it's in the hands of the printer, subject to that printer's scheduling whims and fancies.
I voted for blue. I like cooler colors in general. Plus there's just so many red decks out there, either without a blue counterpart or with a black counterpart.
As far as deck images - he's only asking in GENERAL TERMS which color you like more for a deck back. The deck itself is still in pre-production, not yet ready for public display. If it makes it simpler, grab a pack of blue Bikes (or Tallys, or Bees, or etc.) and a red pack of the same deck. Look at the backs of one card from each deck. Which do you like better?