Recently while reading an article on the F-4J it got me to thinking.
(Scary, I know).

Some of the F-4Js had white radomes and some had black. Any particlar
rhyme or reason as to why, or was it merely for cosmetic purposes? When
I was on active duty I saw F-4s all the time and the thought never
occurred to me, now 30 years later it does!?!?!?