Changeable car colour with key

for my racing game I want the players to be able to choose the avaialble colour for their car using a key, I have the other car colours set up as animation frames, I know how to do that with the key press but I want to be able to disable the race events while the players choose their colour and then press enter to start the race. Woult I put the race events in a group to achieve this ?

I can not understand the doubt, if I can post a sample Capx ...

well what I'm trying to say is when the game starts I wan't to defaulty make the layout paused, and while the layout is paused press a key to proceed to the player's next animation frame and when I press enter to unpause the layout I want to disable the colur change so the player cannot change their colour anymore