Help with a recolor of a folder of images to a set of hex colors.

[Nmbr5]

I am trying to help my son on a project he's working on, a Minecraft mod.  but neither of us are artists.  what we need to know is if there is a way to batch process a folder of images and recolor them all outputting 118 different images from a set of 118 Hex color codes for each image.   hopefully naming each originalfileanmehexcode.png when done  if there is a tutorial for something like this out there I  would be glad to read and or watch it.  Lacking that I would be appreciative of any help anyone here would be willing to give.