I'm still waiting on my girl to lay..... from what I hear with Breda it will be a long wait..... I'll let you know what color mine are when they finally get here!
I have both Breda Gueldre and White Leghorn that are laying so maybe I can help. Below are eggs collected Wednesday from a Breda pullet in her first laying season and a White Leghorn in her forth laying season.
Note: Commercial White Leghorns have the "white egg" gene that will block all brown egg pigments (even if the hen is carrying the genes for brown pigment). This tends to give the egg of Leghorns an almost florescent white. The Breda does not have the "white egg" gene and if they are carrying any genes for a brown bloom it will show on the shell. Some days the difference in color is enough that I can see a noticeably different color between the Breda eggs and the Leghorn eggs, but as shown most days (9 out of 10) the Breda egg is just as white as a Leghorn.
Note: The Breda egg was 63 grams, the Leghorn egg was quite small only coming in at 60 grams yesterday (they may be because the Breda free ranges about 30 hours a week and the Leghorn only about 5 hours a weeks).
Now this is what I'm talking about! A terrific post with detailed and great input along w/personal experience. A good analysis to explain the possibility of difference in color on some days. I love the weight input as well - though size is not as important to us as egg color and breed temperament. Thank you GaryDean26!
Thank you dutchbunny83 - bet you can hardly wait for that first egg to find out the color!