No no no! That is a daft idea. You haven’t considered pedestrians wearing yellow coats walking across a yellow road, they’d be too easily hit by cars who couldn’t see them crossing. And what about brown roads? I’d never be able to see the dog s h i t and avoid stepping on it. You also forgot about parking, what if I had a blue car, and my street/road was green?
I have a better idea. What do you think of putting a coloured additive in dog food, something inert and non toxic, a kind of luminous day-glow type of stuff, this way we’d all be able to see the dog s h i t at night an avoid getting it on our shoes. We could even have specially trained dogs that could s h i t along the lanes of roads, and the glow-in-the-dark-dog-s h i t could replace the cats eyes. This would keep down our road taxes.
AndNo! In case you suggest not wearing any shoes, I tried that, and I can tell you it’s not nice getting it on yer bare feet either, especially in between yer toes.