I see no issues with blue bottles per se. Similar light blocking levels as brown, maybe not quite as much, but keep the bottles out of light while storing.
My only concern is of global conservationism. Do you know how many Smurfs die every year to get the blue into the glass? The world Smurf population has hit a low since blue glass was introduced in the mid 1800's. Please, think of the Smurfs.

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http://smokebubbles.wordpress.com - Brewin' and 'Quein' since last Tuesday.
Bottling the Belgian: A Photo Odyssey
Beer is the mind-killer. Beer is the little death that brings total obliteration. I will face my beer. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see it's path. When the beer has gone there will be nothing. Only I will remain.