Hi Amy,
Welcome to the Helpful Gardener. No question is ever stupid when it comes to gardening, so not to worry.

Your question is a good one, especially with the different colors seen today. The colored part of the plant is actually a bract and not the flower. The flower is in the middle of the colored bracts, which are a type of leaf. The new colors like blue are dyed. There is no blue in this species. You might find this Washington Post article interesting.
https://www.washingtonpost.com/wp-dyn/content/article/2005/12/07/AR2005120700547.html
Here's how to get your poinsettia to bloom again.
https://www.ag.uiuc.edu/~vista/html_pubs/point/point.htm
Newt