Yes Jonathan, being indoors will make them wash out in color and also get leggy. The sooner you can get them outdoors the better. If kept indoors they eventually die. Once outdoors they will recover nicely.
Where did you get them from?
The close up of Astrid is wonderful, I love the fringe of tiny hairs on the leaf margins. Affine makes me laugh with it's sharp pointed leaves, it looks like a very tiny plant with an attitude.
Come on spring, we are all wanting warmer weather so we can see things grow.