Unusual Off White Egg: Who's is it?

[maxsgoldens]

I'm sure the Dom layer it because they lay off white/ tinted eggs usually

 

[hhendrix25]

Just to update anyone who was still wondering. The mystery egg was from my White Rock. I tried the food coloring and it did not work but I was in the coop one morning when my WR laid and I finally solved the mystery. Also, for a bonus all my girls are now laying again.

Thanks for all the comments and suggestions.