I don't think there is a plant that would live in that sort of environment, even if it did it would make the basement dark because it would cut off all light. If you don't like looking at it why not paint the inside of the well or decorate the space with a gazing ball or some other garden art that will give you something to look at but not cut off the light

My sister-in-law is talking about doing something similar, but I think the window well will be about half as high as the ones you're showing. She will need to open her window in order to water the plants, but the clear plastic protector should work as a sort of greenhouse. She's going to try some herbs like that. I'll let you know how it works out!

I attended a high-end garden tour, this weekend, and saw some very creative and artistic gardens. At least two of the homes we toured had plants in their window wells. The plants I saw were hostas, but there were other shade plants used. It was beautifuul and caught everyone's comments and attention. I say go for it!!
-Sprout