it still works, i figured it out, but the directions here are incorrect. http://www.se7ensins.com/forums/threads/get-any-plates-for-your-car-hard-guide-patch-1-all.1052881/
you gotta do the charles setup on your phone and then be in the game driving the car and send an order for a plate the color you want the final one to be and then when you get the txt saying its ready send a new order with diff color plate, dont matter which cause it will be the color of the first one. Then you submit that order and click overwrite the first one. wait for that txt in game then go to charlie and edit the first ticket txt to whatever you want and click execute, wait for that txt then go there and process order and boom, done. super easy when the instructions are correct, damnit!