Finding color to make a dirty car look a little nicer is one my main thing as well, I always went using my gut feeling when it came to buying cars. Learned over time that taking time to feel those gut feelings is key, with a bit of luck in today's world.

Can't say much as I owned 3 cars and bought or helped my mother getting a car for her own just to try getting her safer from point a to point b, knowing the car won't fall apart in the next corner.

Blue is my color as well, it helped me chose for the first car with some cool 2000's style looking rims I still got on the car today, today is a bit lighter blue knowing that little mud hides nicely over kind of sky blue color, knowing I will keep it running till it gets oldtimer.

It's kind of ironically hard keeping a capable 4x4 wagon clean when owner is not that shy of mud, rain, giving way to others and always ready to help someone in need

As for new car those pearl white ish colors were always something special, at least on internet, adding those protective clear foils over the paint to protect it do also add a pinch of uniqueness to it as well, maybe even help getting dirt of it as well