I don't have my camera handy, but I've got five hens; 2 SL Wyandottes and 3 Buff Orps. The Wyandottes have a much smoother egg and more pure in color, like Nestle's Quick. Sometimes they are more pointed on one end and sometimes I can't tell the small end. The BOs definitely have a rougher feeling egg and kind of streaky with white sometimes. Like someone tried to paint it brown with a brush.
But that's just what I've noticed. These are my first chickens.
Here are a few from my SLW! Sorry the picture isn't great, my DH has the good camera at work! I took it in the carton so you can at least see the contrast of a color you know for sure what it is! Hope this helps!
Wow, I think it must really vary by the individual or particular line.... our SLW lays a medium brown egg that is always chubbier than a normal-shaped egg. That is, it's more round, less elongated. It's a totally regular brown-grocery-store-egg color and texture, though.
On the other hand, my Australorp lays the most beautiful, pale beige, shiny, elongated egg, and I know that most people's Australorps lay regular brown eggs. So go figure!!!
My girls just started laying! Those were the very first eggs in that carton so I dunno if they will change a bit with time? I know when my ducks started laying for the first time the eggs were smaller than after a couple of months of them laying...