Yeah, maybe, and it is just the sun shining behind it. But it is very strange that it does project a greenish glow on the floor.
Fun fact about this one, we used to crank all of the materials static lighting GI bounce settings, so a lot of colors would bleed into each other to appear a bit more painterly - didn't always work but this is a good example of how that looked with a lone asset. The suitcase there was made for the old Wenderly Hills Hotel map, which used this process.