Could it be a Tradescantia fluminensis? Commonly called Wandering Jew.
I have one of those and it goes gang busters outside in the shade in summer. When I bring it in for the winter is lookes like the pictures above. I take cutting and put them in water for the winter as insurance. The main plant I just let go poopy. It always seems to survive. In spring I cut it back to the edge of the pot and it goes gang busters again. When I get home tonight I will try to find pictures so you can see.
