I think right now its hard to say what will sell well, but for all we know blue could be one of the more popular colors. Looking at other car makers, german car makers, they seem to sell a lot of blue, i'm thinking that could impact the Q60 a bit... just going with that trend of what people are buying now.
The Iridium Blue does look good on this car, but it seems it would be almost as hard to keep clean as black. Which is why I am leaning towards graphite shadow. Iridium is definitely a close second for me.
Just got my Blue Q60S on White interior Monday.. I like many thought white as my first option but now I'm glad I didn't.. I detailed it doing a full paint correction process that consisted of 5 steps on the extetior paint the first day I had it before I seen it in the direct sunlight and when I pulled it out into the Bright direct sunlight I thought I could jump into the paint and go for a swim it was so deep and sparkling metallic.. ?