I agree of course: Here is the official response from Lexus
Apparently various customers have reported this.
The glass is photochromatic and therefore darker coloured cars which absorb the heat more will have more reactive glass. This accounts for the different colour in the glass.
I have two issues with this response.
Firstly, it looks utterly crap, and the glass in my old 2004 RX was fine, I have NEVER seen another car on the road that has this issue (trust me I have been looking)
Secondly, the car we compared it too was a dark grey, I cannot imagine a huge difference between dark grey and dark blue causing such a wild difference.
I personally think that they should ditch any photochromatic glass. No one wants it, the existing glass was fine, and it didn't look like your car had been filled with muddy water!
Apparently the more customers complain the more chance of something being done about it.
I really hope they do, as everything else on the car is fantastic.
Thanks