I've started packing the textures into the .blend file for these basic rigs the way I do for the advanced rigs. This just makes it easier on me and saves a little space on my hard drive (I already have 6gb worth of 2K24 files!).
If you need to access the textures simply open the file in blender and go to File-> External Data and select unpack resources. I tend to choose to "unpack into current directory" but whatever you prefer should work either way.