Hi people.
All u have to do is go to the customise menu and select a team from the top. Then click on edit kit. When u get to the screen with the player in his shirt change the shirt style. Now change one of the tree colours which makes the players number colour change colour (normally the secondry or teritary colour). Then go back to the teams proper kit (by changing the syle) and the number should be whatever colour you selected on the other kit. The kit colours are the same but the number colour will change!
L8ers