I think we have season 2 on DVD; I think it came out right before Christmas. I didn't bother with it because at the time the season was still fresh in my mind from seeing it on TV.
But as you say (back on topic) something like not being able to see colours would be dependant on the society. If, like the Greeks, their impression of colours was more tonaly based (they called the sea wine-dark, for example, and the sky was "bronze" - which is more about the tone and quality of light than the colour, of course. Unless someone has been drinking some very strange wine.) then not being able to see colours doesn't present a problem because the language used to describe things isn't about colour but tone. If your society has a very strong sense of colour, with myriad words for different colours and colour being a primary descriptor and discerner of things, then the difficulty in discerning between bright yellow and pale pink because they just look the same shade of grey is going to be quite a setback.
But as you say (back on topic) something like not being able to see colours would be dependant on the society. If, like the Greeks, their impression of colours was more tonaly based (they called the sea wine-dark, for example, and the sky was "bronze" - which is more about the tone and quality of light than the colour, of course. Unless someone has been drinking some very strange wine.) then not being able to see colours doesn't present a problem because the language used to describe things isn't about colour but tone. If your society has a very strong sense of colour, with myriad words for different colours and colour being a primary descriptor and discerner of things, then the difficulty in discerning between bright yellow and pale pink because they just look the same shade of grey is going to be quite a setback.