I'm going to guess that you mean you want to share colour palettes?
If so, I think you can create your own. See the palette dir (default windows is below).
Excuse my ignorance please. I want my users to use the same color blue
box boarder for all boxes they create. I know that I can set that color
on my own machine and it will stay until I change it.
What file controls that? I want to install that same file into my users
inkscape so we are all creating the same blue boarder.