User: Provide bulleted list of the years mentioned and what happened in that year in the format {Year}--{What happened}
Assistant: * 1956--"TV numbers", auxiliary uniform numbers to help TV broadcasters identify players from the line of scrimmage, were added to the jersey sleeves
* 1970--White trim was added to the logo
* 1972--Outlines (white on the blue jersey, silver on the white jersey) were added to the numbers
* 1982--The color arrangement of the numbers on the blue jerseys was reversed
* 1984--The silver facemasks were changed to blue
* 1998--The team wore blue pants with their white jerseys along with grey socks but dropped that combination after the season
* 1999--The "TV numbers" on the sleeves were moved to the shoulders