? Painting your car and blending

I have a new Silver Mazda3 (9 months old) 4 door and almost immediately
I noticed the paint was slightly off on all 4 doors (slightly darker).
I had some friends take a look at it and they all said the same thing,
that's it's the lighting so I shrugged it off.

Now, my same friends in different light all agree, the paint doesn't
match. We looked at it again and again and they do agree, the paint is
different.

I am going back to the dealer on Friday for them to look at the paint
and I am wondering what my are options are. Clearly, they won't give
me a new car despite the low mileage. I know that insurance companies
pay bodyshops to "blend" the paint but I don't know what this actually
is and I don't want to thin-out the existing paint. I understand that
newer vehicles now use more environmentally friendly paint (mine I
believe is water based).

Any advice or info is appreciated.

Thanks
M