Today’s recommended tool is the Google MapBuildr, which has an easy to use interface allowing the creation of custom google maps. Includes pretty much any stylization customizations you would expect to have control over, and even allows for saving of your project to edit it later if needed.
One of the cool features is the drop down of “Snazzy Map Themes” which give the ability to change out the map texture to a multitude of custom ones. This can either be for just personal preference, or for professional reasons of better theme matching. With over one-hundred options to choose from, there is no short of variations to fit your specific need.
Since OpenCart 2.0 has come out, it fulfills the goals of my theme, therefore I am no longer supporting it at this time.
Post Script is a Opencart Theme I created based upon the responsive Skeleton grid. I went through and changed out almost all the front-end structure to work cleanly at all size.
My goal was to recreate a basic theme, which also allows for someone else to be able to easily modify and adapt and change styles out to meet their needs. With a little bit of work, this theme could be completely overhauled in appearance, while still holding to the current skeleton structure.