Hi DollyKim! I did not see the playsets. The box just claims that they exist. Which is why I don't trust the box...
To comment on the original post (sorry, I got excited and totally forgot!):
I love the yellow. I've seen vehicles (Hummers even) that color. So I think you could make it look fairly realistic. If you are using Liv bodies (not sure that you are - you seem to have a cool mix) they are shorter than Barbie and would look somewhat less crowded in the Jeep (not sure you can avoid crowding issues at all).