I sold eggs at the local farmers market for several years, & yes there were always some that wanted all brown eggs "because they taste better."Don't forget the biggest myth we all have heard. Brown eggs taste better than white eggs
On the flip side, there were always some that wanted all blue eggs because "blue eggs have less cholesterol."
I started cracking eggs of different colors in a bowl (and left the shells in the bowls too) so people could see that although the eggs were different colors on the outside, they were all the same on the inside. Once people saw the white leghorn jumbo eggs also had rich golden yolks, they wanted those too!