my blues and blue-greens are very light compared to some i guess... that's why they produce such clear blues when bred with my white-egg dorkings. 8) no paint involved 8)The blue eggs can be very hard to candle. THE WORST is Olive Eggers. When you get the blue eggs covered by that dark coating it is almost IMPOSSIBLE to see in that egg. BUT Marans are harder than the blues, but not by much. It really depends on the blue eggs some are easier to candle than others.