Customize WP Site Currently Using Sandbox theme

I have a WP site using the common sandbox theme along with a contact form plugin.? The site does not have any blog posts or categories, only pages.? I need the theme / plugin stylesheet customized to look more visually appealing and professional. ## Deliverables I have a site using WordPress, the Sandbox theme and a contact form plugin.? The site does not contain a blog, only pages.? I require the folowing: 1. The Sandbox theme and stylesheet(s) for the contact form need to be customized to look the same as each other. 2. The entire site needs to have it's style modified to look different than the standard sandbox theme, more professional and visually appealing. 3. I will provide a logo in the future, so an appropriate location for the logo must be preserved. 4. You can select the colour scheme, must be professional and fit in the IT Consulting industry, I will have my logo designer work with the colours you choose.