My 2005 Jazz was yellow as in my avatar. I like yellow on the 'right' car. a yellow SUV would IMO just look like the old GPO truck colour. I have also owned two yellow Stags.
The thing I find, living in 'Costa del Geriatrica' is that at dusk or any poor light situation nearly ALL the cars that have not switched their lights on are either black or grey and too old to have running lights. I don't care if they kill themselves, but I don't want to be involved in their accident, because they can't be seen. Do they think it costs money to turn their lights? Does the penny not drop when every other car on the road has their lights on or are they simply brain dead?