A Few questions about the Flash pallette

Firstly, this is one of the problems I’m having. I’m designing a backround right now on Flash, using its pallette/tools ect. Anywho, I used the paintbucket on the tree, it worked. Now I’m trying to use it on the remaining white area behind the tree, but it’s not working… Anyone know why?

Another question: Does Flash have any lighting effects? For instance, for a lantern…ect.