Oh, yeah, should've clarified, my bad. The yellow and blue on that tab indicates:
Blue: Protected rival (i.e. Neb/Penn St, North Texas/MTSU) I was lazy and just colored them all blue, didn't think I'd ever upload it anywhere, so I understood what it meant lol.
Yellow: Rivalry that happens within division or somewhat annual basis (i.e. OSU/UM, Duke/UNC, UTEP/NMSU)
I started it out as a "how many named/trophy rivalries were there per year" and then re-did it to include ALL rivalry games.
I don't use the editor since I have use my personal Coastal Carolina teambuilder in dynasty.
I also tried to keep this as close to real life as possible except I used CCU in the Sun Belt until 2017 when UAB "returned" and put Coastal in the C-USA East to balance out divisions. I replaced Idaho with Coastal Carolina due to Idaho dropping down to FCS.
Following what you kind of said in a previous post, I saw that ECU played the Carolinas, Old Dominion and UMass would schedule Virginia Tech and Boston College, respectively. So, I started as close to real life (as I wanted to make it) dynasty and have monitored the rivalries closely. The "sheet2" tab can be trashed, btw. The "rivalries" tab shows which team won, which year, and the score. I was going to track which team was the home team, but I decided against it. I'd start tracking it, but I am too far into my dynasty, and I like to have as much complete data without holes.