anyone know what the colored flowers after are ?s are for?

It is just a way to say: Thanks, nice idea or thanks for the information and etc. Many of us keep track of what we have read or responded to by whether it has been checked. We think of them as our "flower garden". Where else can you receive so many flowers to cheer you up!

If you mean the green ones, if you want to send that person a flower you click on it and it turns orange.