Update Shopify Store Template and Fix for Mobile Responsiveness

We are looking for a Shopify expert to update of our Shopify store [login to view URL] The store is up and running successfully but we want to change the colour scheme. We are in the middle of a change of the black background to white and need someone to complete the work. This change will also require the change of a number of other elements so they remain visible on the new white background. Once the colour change is complete we also need the store fixed for mobile responsiveness. Work includes: • Proposal and agreement for colour scheme change, you will need to work with us on the colour changes to make sure they work and also look good. • Implement colour changes across the entire store including background and foreground elements. • Make changes to website so that it is mobile friendly and can be used on devices such as phones and tablets. It would also be good if you can make some simple wording changes to our eBay store such as removing a banner. We will discuss the work in wore detail with the preferred bidder before we award the project to make sure that all the work needed is understood and covered. We will provide you with the access you will need, clear directions and constant feedback where needed. We are looking for someone who is responsive and will complete the work in the agreed timeframe. Should this piece of work go well we would like to have an ongoing support relationship with you. Please bid an hourly rate for this job and the number of hours it would take to complete, for each element.