Color Change Mock Up for Meditation Cushion

I need a mock up of a meditation cushion created using different colors from the original. Below is the original meditation cushion. It is green and black. I need a mock up created that changed the black color to blue and the Green color to red. The colors of the blue and red are available under this link. https://www.carrtextile.com/search.aspx?search=Fortress%201000%20Denier%20Nylon%209.4%20oz
They are Navy (1000D-NAV)
Red (1000D-RED).