Hi,
i want to change my force and relax color but i want to see how they look actually on the tori before i buy them . Is there any fast and easy way to do a preview ingame?

Yes, you can click the Torishop in-game and search for the color of the item to see it before buying it.
Make sure you have the latest version of the game to preview the newest colors added.

If you are asking if there is a way to view the forces and laxes in the game, just go to torishop from the menu there.
Edit: too slow

ok thanks for the fast reply

No problem