Phyllobates vittatus question

[DragnDrop]

These suckers aren't the easiest to sex, are they?
I've only managed to get 2 to co-operated for pictures, the others disappear at the sight of a camera. So, going by these two pictures, is there any way of guessing what sex they might be? If so, I can get an idea what the others are by process of elimination. Supposedly the leg pattern in males isn't as clear as in females, but mine are all so different in pattern that I have no clue what is meant by 'clear'.

http://www.ssnakess.com/photopost/data/503/321vit-med.jpg

http://www.ssnakess.com/photopost/data/503/321vit3-med.jpg

Any guesses? Thanks. :)

[Linds]

Can't help you with the sex... but wow... those are some awesome looking little frogs! :D

[Duncan]

I've only seen a few vittatus (seeing how Phylobates sp are technically illegal in Alberta) in person and the ones I saw didn't show any noticeable differences in toepads or coloration. How about overall size or "snout" curvature (I've read that in certain frogs females (or was it males?) have more rounded snout profiles while the males are more angular). Sorry I can't be of more help. Great looking frogs though!
Duncan