I would prefer them to be higher but recently Carlton Cuse said he is confident of a third season. People have been saying that this season is even better than the first one so hopefully that will help with the renewal decision.
EDIT: I have just seen the second episode of Colony. It was so amazing! Different characters have different approaches to what is happening and it's intriguing to see how people cope.
Have you seen any episodes Alex? Sandra, my co-mod says the first season should be coming to Netflix in Germany soon.