I'm still a newbie too, but at 7 days when I candeled I could see veins and a blob (which would be the baby). From these pics I can't see that, but it may just be the pics. Are these for sure fertile? Good luck and maybe I just can't see it well enough.
I have light-brown eggs to deal with when I have to candle. I have yet to EVER see a "vein" anywhere, and I've used several kinds of lights. All I can tell you is what gives me a clue about what's going on in the egg that Miss Prissy told me:
On day 14 If there's a black blob showing through the egg, a chicken is forming. If the egg is clear and practically glows, it probably ain't never gonna produce no chick.