Red lipstick?

I'm in Houston visiting my family while Mark is here on business for the week. So I just have to share this conversation I had last night with my almost 5 year old son. You tell me if I should be worried...

We were looking at old family pictures together and then Zach spotted the bridal shots of me and all of my sisters. As he was going through them my mom and I were asking Zach who each one was and he was naming them all...Mommy, Aunt Kelli, Aunt Kristin, Aunt Kathryn.

So then I asked, " So which one do you think is the prettiest?" (thinking of course he's gonna say me because I'm his mother, right?)

Zach looks at me with this little smile on his face and he says, "ummmm...Aunt Kathyrn!"

I then shockingly replied, "What? Why is Aunt Kathryn the prettiest?"

With a little silly smirk on his face he said quietly, "Because she has red lipstick!"

I seriously had a hard time keeping my self together. My mom and I almost died laughing because I seriously had no idea that my son really noticed or cared about red lipstick!! Now, just in case you're not one of my sisters and you are reading this, for your information Kathryn has beautiful big lips and she basically used them as her accent color with her red roses for her bridal portraits. You can't miss her gorgeous big red lips in her picture and that is exactly what she wanted. (love you Kathryn) Anyways, so now I'm just wondering if I need to wear more lipstick so my son thinks I'm the prettiest! J/K I just guess I didn't wear much on my wedding day...or not enough red for my son's taste! Oh well. So now that I know he likes red lipstick should I be worried? Isn't he a little young?