Yellow or Bert?

Alaric fancy the color of yellow. He tend to choose toys that are yellow. Choose yellow crayons during doodling time. Choose yellow teether when biting since young. Choose shoes that are yellow.... ....
His current favourite Sesame Steet character is Bert. I wonder is it because Bert is close to yellow color or he really adores Bert as a character itself?

Anyway if you do come across toys of Bert, do inform me as they are really rare. As you know, Bert isn't really a popular character in Sesame Street. It's always either Elmo, Big Bird or Cookie Monster. I don't know why he doesn't fancy Big Bird as he is more yellow than Bert. Haha.