Dark green taproot on autoflowering seed?

Hello. I just got some feminised big devil autoflowering seeds from herbies...and I started germinating it last night...today, when I checked on it, its cracked and I can see a little bit if the tap root but its like a dark green color..almost like a spinache color...I don't know if this is normal since I've only grown bagseeds before and have no experience with feminised or autoflower seeds? Thanks for any advice

how did you germ them?

Paper towel method under a heat pad on a thermostat to keep it at 83f.

How did it turn out? I just got a green taproot the same. Never seen it before.