Just giving my two pence worth on Isaac Blue. Was locked in total despair choosing between isaac and indium on my 2018 GTD. Ordered isaac but at the last minute tried to change to indium as I thought it was the safer option but spec was locked. How glad I was too as isaac is an absolute banging colour and I'm totally chuffed to bits with it. I also thought the 90% tints would be a mistake too as I would look like a bad ass drug dealer but I was wrong again, suits the colour down to a tee. Moral of the story is trust your gut feelings! Looks slightly dark greyish on a dull day but classy blue tint in the sun. Does not do it any justice whatsoever on net pictures (I should know as I trawled the net for eons) but in the flesh it's absolutely stunning. Only my opinion but hopefully might be of use to someone spun out on isaac like myself. Btw when I collected car mine was in the showroom next to an indium r estate and what a disappointing colour compared to issac, maybe showroom lights but struck me as dull and plain so I ended up leaving the place buzzing.
