modified joomla main menu module

I'm looking for a joomla menu system module. I have written the menu in plain html, please take a look at: [login to view URL] I want it as a joomla module. I want to be able to change the yellow color. I want to be able to change the gray color of the boxes. I want to be able to add more menu items (tabs). The active tab should change to the chosen one. No ajax, when a tab is clicked, the page changes and refreshes. In other words, it should exactly work as joomlas standard main menu, but have this very appearance, and some more options (changing colors etc) You can either rewrite the main menu code or make a new module/component/plugin. please contact me if something is unclear.