I wouldn't blame the tenant but what I would do is paint the mailbox (and the post holding it up) a random color so if somebody hits it and the paint rubs off it will be easier to figure out who is at fault (as the paint will likely rub on the car that ran into it). 

So I went with a darker color.

Remember, the FEDERAL Protected Classes are Race, Color, Religion, National Origin, Sex, Disability, and Familial Status. https://tinyurl.com/y9acgrtsStates, Cities and Municipalities MAY ADD to the list of protected classes.

Worst part was, we had an alarm system, but wasn't instructed properly on how to arm the motion sensors, so the thief waltzed right past the armed alarm when he left with all our copper.  

For example specified by region and sun exposure so paint colors are relevant to the space.

Sure you can paint a wall, just run the color past me so I know I can paint over it easily if you leave.

The rock is a black and dark gray color, not appealing.

I am trying to make sure I don't pass on a deal because of it not meeting certain metrics.Is cash on cash return and CAP rate really important for someone who plans to buy/hold/rent (long term) plain jane, blue color, type properties (SFR/small multifamily) in order to replace w2 job income?

All we are waiting for is a new trigger to set it in motion.

Look at Ring, or another motion sensor door bell.