I even suppose that some ppl could take the Scripture the other way: in order to be salt and light, using means to seek to be instrumental in blessing for others, might even involve in their minds using a Scripture tattoo that is a conversation-starter...The Bible scripture says we are to show our love and that we are set a part by God, Being Salt and Light in the world Matt 5: 13.
(If this makes sense? ...not that you yourself would choose this means.)