Sitecore webshop background and category design to be updated.

I have a sitecore webshop I would like to have my ovn background in the shop and i would like to have a simpel cool category selector and not the borring standard Sitecore one- 90% of my clients use mobile devices so the new design need to be optimized for mobile devices and work on PCs ofcause. So if you are a Sitecore specialist and want to do this 2 minor things for me asap please give me a quote, thanks