By Zach McKinnell Five-star offensive tackle Jordan Seaton officially signed with Colorado on Friday. He committed to the Buffaloes on Dec. 7 over offers from Maryland, Alabama, Florida, Oregon, and Tennessee. He was scheduled to sign on Wednesday but decided to postpone his signing to later this week. Many experts speculated that Maryland or another program was making a late push for Seaton to flip his commitment. Seaton announced his signing with an Instagram video featuring Colorado quarterback Shedeur Sanders. His caption was a message to the college football world about Colorado’s mission…