How fucked is it?

All right guys. Just looking for a bit of advice. I tried to colonise corn and I've not had the best time of it over the holidays. Lots of temperature fluctuations. It was too wet and it was too dry. Here are some pictures of what I'm looking at now. Hopefully you guys have got some good news for me or it's all for the bin. I was a little concerned by the grey colour and not really sure what's going on in the box.