Styling individual pages

A client has asked me to create a shopping cart/store for their site and I wondered if Marketpress would allow me to do the customisation I need to create it?

Basically, they are having five brands, each brand having its own range of products inside - as it is a beauty-type business, the suppliers of their products have requested they have their own branding on each page.

Basically brand A would have its own page and style which their products would be part of, brand B would also have its own branding different to brand A but still using the same shopping cart so clients could order from both brands.

I know this sounds a little complicated to explain, hopefully you can see my issue.

Would I be able to customise each brand separately with graphics and colours basically?

Thanks, Mark