My family has a sweatshirt design that we always give to the new initiates in their baskets. I don't know how long its been going on but I know my great grand big has one. So I guess our "family colors" are the ones we use on the sweatshirt.
We also have this thing with everyones names on it dating back 7 or 8 generations. Every year it goes to a new little, but since we have different branches of the family, it stays in the direct line, or whatever you call it. I'm in the direct line so I have it now, but I get to give it to my little this fall.
The last thing I can think of is this journal thats been passed down for a long time. The big sis writes a letter to the little, and they get it on initiation. Then the next year the little writes to their little and passes it down and so on.
I love family traditions!