Logo Design - Activities Website

I'm currently in the process of setting up an activities listing site, whereby people can search for classes for yoga, karate, dance, etc. in their area.

The scheme of the site is blue (particularly sky blue), whites and a little grey for lining borders.

I'm looking for a competitive, quality quote where people can provide professional clean cut samples.

This logo needs to be able to appear on a blue background, however I would like the flexibility to change the colours myself via Photoshop for different projects, so supplying in both tiff and psd format is a preferred.

Depending on the level of work involved in this site and work offline (i.e. print), there may be more opportunities to work together in the future.