One of the things I like about this is that OP is giving people genuine compliments without any particular agenda.
It reminds me of one of my favorite parts of How to Win Friends and Influence People by Dale Carnegie, where he tells a story about complimenting someone, and a student asks what he was hoping to gain from offering the compliment. Carnegie is incensed:
> I was waiting in line to register a letter in the Post Office at Thirty-Third Street and Eighth Avenue in New York. I noticed that the registry clerk was bored with his job[...] So while he was weighing my envelope, I remarked with enthusiasm: “I certainly wish I had your head of hair.”
> He looked up, half-startled, his face beaming with smiles. “Well, it isn’t as good as it used to be,” he said modestly. I assured him that although it might have lost some of its pristine glory, nevertheless it was still magnificent. He was immensely pleased. We carried on a pleasant little conversation, and the last thing he said to me was: “Many people have admired my hair.”
> I told this story once in public; and a man asked me afterwards: “What did you want to get out of him?”
> What was I trying to get out of him!!! What was I trying to get out of him!!!
> If we are so contemptibly selfish that we can’t radiate a little happiness and pass on a bit of honest appreciation without trying to screw something out of the other person in return—if our souls are no bigger than sour crab apples, we shall meet with the failure we so richly deserve.
> Oh yes, I did want something out of that chap. I wanted something priceless. And I got it. I got the feeling that I had done something for him without his being able to do anything whatever in return for me. That is a feeling that glows and sings in your memory long after the incident is passed.