Making Logos

Now that we came up with our website name, I decided to make a logo for it. I found a very nice font called, "Alba," created by Fontalicious from dafont.com and used it. Most of the work is done in photoshop. Here are the logos I made.
Big Rainbow:                                  

Small Rainbow:

Lighter Rainbow:

Watercolor 1:

Watercolor 2:

Tuling does not like the logos with rainbow :'(
Which one do you guys like the most?