FWIW..
I run 2 x coral+, 2 x blue+ and 2 actinic..
I would not consider it "blue" by any means.. But I really like the look..
I'm old school and don't like a Windex tank but "good/realistic" coloration
I think you would want to run more blue+ if thats what you are going for.. So replace a coral+ with another blue+
ATI has some recommended bulb combos on their site..
Here.. See "What bulb combinations do you recommend"
http://www.atinorthamerica.com/faq.php