How do i start greek life on a campus with no existing Greek life?

[excelblue]

I'll start: this is gonna be difficult.

In any case, if I were you, I'd start by contacting a variety of resources:
1.) Student Activities office -- this is because your college probably doesn't have a Greek Life office, but they may provide some info on the situation.
2.) Greek Life office of the college that does have Greek Life -- they might direct you to a few more resources.

Because you're interested in starting an organization specifically for people of color, you might want to look into one of the NPHC sororities.