When I was younger I remember watching a copied VHS that had a partial sci-fi movie on it. From what I remember a humanoid alien family somehow gets stuck on earth.
There were 2 sisters whose hair changed from white to brunette/blonde in sunlight.
They had an orange fuzzy alien like pet with maybe 3 legs, and it was apparently a young whatever and it smoked coal at some point.
I've tried looking for family oriented scifi movies from the 80s/90s and have had no luck finding this title.