Added formatParse to FlxText: t.text="show $green text$ between dollar s...

...igns"; t.formatParse([greenFormat],["$"]);

(Trying this again)
Yeah... I guess in flixel there are actually very few functions that guard against null errors, so it wouldn't make too much sense to prevent that here.

In the case of both arrays having length 0, nothing should happen I think.