Change png images color (orange to green) in some icons

Hi, We have some png icon images which have orange color at few places, we are looking for someone who can change orange color to green (our logo color). You have to do this in next 1-2 hours. They are 139 icons in number, but these are very very small changes in each icon. please bid only if you can do it for 5$. Nice feedback opportunity for new freelancers. Thanks.