I'm still watching and I don't know what to think. I thought that episode 3 was much better than the first 2, but that's not saying much. I don't see any chemistry between Frances and Robert and find myself questioning why they were together in the first place. However, maybe that's the point?! I think the actor that is playing Robert is acting in a comedy, while SJP is acting in a drama and that makes for a confusing show.
The weather and colours just add to the overall depressing feel of the show, but it's about divorce so it makes sense.
I think for me I'm seeing it in a little bit of a different light because I went through a divorce. The moment in the counsellors office (after she is talking about her gallery), was huge for me because it felt real and it felt a lot like I experienced.