Like others have said, at least it was you doing the damage.
I had my Z for like 2 months and accidentally dropped a can of insect repellent off of a shelf, onto my back bumper. Still a scratch and a little "dentish looking thing" there, but I look at it and say, "Hey, I did that.
" Oh well!
Seriously. A can of bug spray? Anything can happen! Enjoy your machine. 97% of the time, you will be the only one who notices anything.