Create a Firefox add-in / extension - Display custom start page

I need a new firefox add-in / extension based on HTML5 wich provides me a start page where i can create my own custom page with shortcuts to all my favorite websites. For Google Chrome there is a extension called "Lightning Newtab" wich explains the basics for what i need. It has to be brandable to my own company layout and should look like the extension as in Google Chrome as in design. What i mean is offcourse the design can vary, but i want a nice and fast design where it is possible to put a custom background on it, create your own bookmarks / links on a page, select a custom icon for the shortcut, etc. You need to help me to create a good looking add-in / extension wich i can use as a service product to my customers, helping them to create a beatifull starting page with a little brandable shortcuts to my support page. Are you able to do this, please let me know how much time you need and what improvements you are thinking about.