Obviously a bad analogy (wasn't mine to begin with, btw), since one does not need more than one color of paint.
Still, an earlier post pointed out the importance for multiple browsers and multiple paint color is not as important.
Although... if you wanted to put yellow FORD paint on the hood of your Jag... (OMG! - lol) would you expect the entire paint job to have a meltdown?
Why are we discussing paint? Can a car run without paint? Yes. Can a computer run without an operating system? No.
Engines, on the other hand...
So, you want to buy a Ford, but demand that the dealer install a Jag engine. And, you demand that it work, without doing any damage to the power train.
Good luck, pal. You'll need it.