Does the color of the cart determine a carts speed?

12 to 16 mph from the factory. They don't want you to get killed then sue. Many aftermarket companies manufacture motors and controllers to get you over 20 mph. Add a rear gear set, 48V and a 600...

It is somewhere between 10 and 30 mph.

Théophile Cart (March 31, 1855 in Saint-Antoine-de-Breuilh - May 21, 1931 in Paris), the French Esperantist professor and linguist

There probably isn't a speed control on the golf cart itself, but on its engine. To get more or less speed out of it, you would need to mess with the governor (on the engine itself).

adjust the linkage on the cable and open up the governer