My experience is with various graphic designs, from the big and simple to the small and complex.
Given what you have requested here, it seems to me that this project won't be very difficult at all. Reassigning colours is a simple matter for someone who knows photoshop.
As a student, my primary goal is to expand my portfolio, whilst putting any funds earned toward my fine arts education. As such, I will request that I am allowed to display the completed work in my portfolio, but will not require a particularly high budget.