What a fun concept! I had a blast rolling around the room as a coffee machine. I also really enjoyed the minimal style. It was fun just messing around with and I totally think you could develop it further! Good job.
I did have some problem figuring out the criteria for possesing something other than the color. I assumed it just needed to be under the cross hair, but I had issues getting stuff under the cursor with the limited camera movement in places. It also seemed like there was a distance component. Would be nice to have an outline or something when it is highlighted to let you know.