Being colorblind, the second level was pretty tough to play.^^' And pretty long too! Fetching 40 objects quickly becomes repetitive.
However the concept is very surprising at first, and pretty fun to discover. You try to scan everything, explore different possibilities... It's pretty smart! :) But it might be more fun to look for various objects rather than collecting a large amount of some. Finding what kind of objects were "green"(~ish, for me at least :p) was interesting! Gathering all of them, less so.
It's still a solid concept, with a nice presentation. Good work!