Matthew 5:16 says “. . . let your light shine before others . . .”
I have been a Spirit-filled Christian for 20 years, and in my experience with other Spirit-filled believers, I have found a very cool phenomenon: humans act like light filters! When God shines through them, what that person does and says, as well as what their face looks like, ends up being some God, and some that person. Apparently He likes it like that; and when you think about it, why would He make all of these personalities, only to overpower and evaporate them later?
So the way I “see” it, God’s pure light comes through us in colours. It goes in white, and comes out filtered through us. And since we each have our own unique personality, it’s like we’re our own unique colour. But we don’t shine that colour until the Light shines through us; and then our colour shines beautifully, and everyone around us sees it! I think my colour is indigo. What’s your colour?