Compliment a stranger

Hello everyone! I live in Japan currently and in this country, we are not supposed to talk to strangers at all (because strangers dangers!). However, one day I found a girl with perfect cut-crease makeup and I could not stop myself saying "Excuse me, wow, I love your makeup!" to that girl. (I am female btw haha) She responded me saying "Thank you:)" with a big beautiful smile! I felt great about it and I decided to compliment strangers more if the situation is right :)