Nah, those aren't full dark, they're 'pictures taken in ambient light' dark. In a dark room they'd look different.
Eggs don't really get so full you can't see through them until quite late in incubation.
I've done the candle every day thing through multiple hatches, some of which is documented here:
https://www.backyardchickens.com/threads/bunch-of-candling-development-pics.1386101/
Look at the thickness of the veins, are they thick enough that you can see the light and shadow on the veins themselves? are they into the pointy end of the egg? Look at the embryo-- is it a wiggling bean with the eye easy to make out or is the embryo kind of hidden inside the egg so that what you can see is more movement than anything else?