Almost impossible. But you are comparing standard appliancemobiles with other standard appliancemobiles. If you do the same comparison using standard appliancemobiles from any other era, you will get the same "they all look alike" result.
Apart from the sameness of design, my biggest gripe today is that virtually every vehicle on the road today is white, silver, black, or minor variations on those three basic colors. Talk about boring!
Except for a few "sporty" or enthusiast cars (or commercial vehicles), interesting, bright, and/or attractive colors are completely gone from the showrooms. What was the last American mass produced car that could be had in a two-tone color scheme?
One German model that I am familiar with is offered in this country in 6 colors, but in Germany, you can choose from 36 colors (most cost extra, though).
That is because people decided not to buy the other color schemes. As for the two tone scheme, you can still get it on the Ford Flex and various pickups.
You're right. I remember when interesting colors were cool.