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I've been really intrigued by your Power MOSFET RGB LED PWM Driver. Prior to my idea i changed the LEDs in my Toyota Scion tC from amber to white on my gauge cluster... now I'm bored with that and i like to have options . Mind you the SMDs will be wired up to the car through the driver and placed over the spot where the white SMDs are now I'm looking to take the idea you have here and use say 4 or more RBG smds with it. Because the SMD have 4 separate contacts for each color and a common ground it would work the same correct? all of the above considering the fact that all the caps and volt regulator are changed to be equipped in a car.

Im new to led drivers and the such so please inform me if I'm just way wrong here

It wouldn't work as shwon because the MOSFET driver switches the ground side of the LED. If using a LED module with a common terminal it needs to be common on the +ve side (common anode LED module). What you describe as best I can tell is a common cathode (ground) LED module.

You'd have to design an alernative output driver that switches the high side.

Thanks for steering me in the right direction here Pete.
I believe I've found a solution tho!

After doing some digging i found an RGB SMD that does not have a common
The PLCC6RGBCT Data Sheet: http://www.hebeiltd.com.cn/led.datasheet/PLCC6RGBCT.pdf
The LED module itself looks to be just 3 SMDs in one

The datasheet shows it has seperate connections to each LED so you can common the anodes or cathodes as you like.