Joomla Virtuemart Website Re-Styling

The existing website is working fine and looks good but I would like some styling changed to make it easier for customers to read and navigate. Some Fonts are too small and don't stand out enough, and some colour changes to backgrounds would help to enhance certain things. This would mean new CSS Styles need created and applied to certain Modules and Displayed Product Names and Prices inside these modules. Also the text on the Checkout Page is a little small and would be better a little larger too. I have attached 2 images, one of the existing modules, and one of an example we are aiming towards (although we don't want to use the new-style green colours, we will stick to our own orange old-style colouring).