Please remember that even that soon back when, there was a lot of racism going on! In 1965 when I was going to approach Sigma Nu to Colonize my local, the State of Kansas said no Greek Organization with a White only clause would not be allowed to expand.
We were Colonized by LXA in 1966 and never looked back. One of the reasons was I founded Beta Chi on No hazing. The Black GLO's were strong at The Pitt. and I had friends in all of them.
When they faded, we were the first to initiate Blacks on campus. Why, because the were super guys which brought a lot to the chapter.