I wanted to do something with my site possibly but have no idea where to start.

On my site I think I would like a drop down menu, with options to choose from i.e ( blue, red, gold ) etc. and once u click on one of those, the site reloads with that template using CSS. Kinda like what UBBTHREADS has when u go into ur profile.

Anyone know how to design or do this?

you can examine the whatever code ubbthreads use

http://www.ianspence.com
That an example of what Threads does for the most part. It uses the Colorforums hack and reads the cookies of my board on the php page, and formats it accordingly

howd u get the same skin as threadsdev? Or did u just design it by code freely, to make it look like threadsdev?

I just designed it to replicte ThreadsDev's layout.

Guys, Im really talking about something like what this guy has...

http://hanse.citydealz.com/

Look to the left menu sidebar, where it says "Template Chooser"

Isn't that part of the Mambo system?

You'd need to start with the css templates... when you are ready, I'll give you the code so that people can change colors with one click (or you can use colorforums mod for your version)

i have css templates. I dont want a coloforums hack, i just want people to be able to change the main page template. I wanted to know if the link above, that site, usings javascript, or php, or what for that cool dropdown template thing.

This is actually my site. I just did a search on it and found you guys talking about it. Any ways yes it is a mambo module written in PHP if you want to files I can get you them. Currently I don't have the template chooser on because I have not modified all the templates I have to my liking.