I don't think there is an 'effect' for that in the original Movie Maker
program.
I have various levels of contrast and brightness correction and it is in
my
'effects' from a Pixelan package that I bought. Here is the
website....click on Spice FX Packs and it will take you to the page
showing
their offerings.....I bought the whole 8 pack for $59 and am not sorry
that I
did....the effects and transitions it provides are awesome. Good luck!
http://www.pixelan.com/