Biothane collar- need help picking colour!

I'm getting my dog a biothane collar from dogwalkies.ca and I'm just wondering some suggestions on colour!
These are the ones I prefer-

sunflower yellow- http://www.etsy.com/ca/listing/104515428/sunflower-yellow-34-wide-beta-biothane?ref=shop_home_feat
sunny neon yellow- http://www.etsy.com/ca/listing/101808869/sunny-neon-yellow-34-beta-biothane-dog?ref=related-0
Or purple pastel lavender-
http://www.etsy.com/ca/listing/104564463/purple-pastel-lavender-34-beta-biothane?ref=related-7

I don't know how to post pictures of my dog but I'll just say that she is a sable brindle (predominantly black) female mutt.
Let me know what you all think thanks!

No one?

I would go with the lavender or the sunflower one

I just got their sunflower and really like it. So I vote sunflower!

Thanks! The sunflower was the one I was leaning towards!