No, I have literally been told by people that leg color = egg color. There are people in Olive Egger groups who are FULLY CONVINCED that dark green legs mean you're going to get dark green eggs. I've also been told that it is earlobes that determine egg color as well. I've also been told that...
I agree with you. I have a lot of people argue with me that ear color (and some people can't even agree what the ear is) also says what their egg color will be.
Genetics for egg colors is super complicated and correlation is not causation.. and some people can't separate that.
There's a very wide spread belief that leg color tells you what egg color you're going to get. I was told that a bird with blue or green legs would lay those egg colors, too.
There's so much misinformation about egg color and what signs to look for on your bird for that info.
Nobody really knows why leg colors happen the way they do. I have a yellow legged bird that lays blue eggs, a blue legged girl that lays brown eggs, and a few green and yellow legs that lay Khaki colored eggs. Leg color does not *always* tell you what egg color you're going to get.