1939 cletrack general

hi! i am looking for information on the 1939 Cletrack General...my grandpa got ahold of the one his dad originally owned and wants to restore it....but different sources are giving him conflicting info on the colour of the rims...he has been told silver by some, but others are saying that they should be the same colour of the tractor...how would i find out for sure....he is very proud of this tractor and wants to make sure and restore it back to original....thanks