I know that Actionscript is a dynamic language, but is there any way to minimize variable name misspellings by having Flash, for example, colorize your own variables that have been declared when you type them and issue warnings when you assign a variable an undefined value?

Director does the latter and it makes life a great deal easier.

Does Flash have any functionality that can help this situation?

(I know about the semi-strict typing in AS2, and that helps a little, but I am looking for more.)