COLORS   Undated 1913/14 - 1920/21.  Aluminum 1949-50.
1913/14   Black/White                1944      Red/White
1914/15   White/Dark Blue            1945      Black/White
1915/16   Black/Gold                 1946      Blue/Dark Gold
1916/17   White/Black                1947      Black/Beige
1917/18   Black/Light Green          1948      Beige/Black
1918/19   Green/White                1949      Black/Aluminum
1919/20 TYPE 1 Dark Blue/Light Blue  1950      Green/Aluminum
        TYPE 2 Dark Blue/Light Green 1951      White/Dark Blue
1920/21   White/Black                1952 TAB  Dark Blue/White
1921      Black/Gold                 1953 TAB  Dark Blue/Yellow
1922      Gold/Black                 1954      Black/White
1923      Black/White                1955      White/Black
1924      White/Green                1956      Black/White
1925      White/Red                  1957      Red/White
1926      White/Blue                 1958      Yellow/Blue
1927      Black/Gray                 1959      Blue/Yellow
1928      Blue/White                 1960      Blue/White
1929      Black/Yellow               1961      Brown/White
1930      White/Black                1962      White/Dark Green
1931      White/Green                1963      Green/White
1932      Black/Orange               1964  PR  White/Dark Blue
1933      White/Dark Blue            1965  PR  White/Red
1934      Black/White                1966  PR  White/Black
1935      Orange/Black               1967  PR  White/Light Blue
1936      Black/Orange               1968  PR  Gold/Black
1937      Yellow/Black               1969  PR  White/Black
1938      White/Black                1970  PR  White/Light Green
1939      Black/White                1971  PR  White/Red
1940      White/Black                1972  PR  White/Black
1941      Yellow/Red or Dark Red     1973  PR  Gold/Dark Green
1942      White/Green with           1974  PR  White/Red
          Yellow & Brown decals      1975  PR  White/Green
1943 TAB  Silver (Zinc)

BASEPLATES   All aluminum.  All are Fully Reflective 1982-present.
1976-80   MAP             White/Dark Blue   (Type 4 Medium Blue)
1981-82   WHEAT           White & Yellow/Blue
1982-88   SUNFLOWER       Blue & Yellow/White
1988-94   STYLIZED WHEAT  Dark Blue/White, Tan & Beige
1994-2001 SKY BLUE WHEAT  Blue & Gold/White, Light Blue & Yellow
2002-08   STATE CAPITAL   Black/White, Light Blue, Gray & Gold
2007-19   STATE SEAL T1-2 Dark Blue/Light Blue & White

2018-24   STATE SEAL T.3  Black & Dark Blue/Light Blue & White

STICKER COLORS   All are Fully Reflective.

                 No Serial 1972-75.  Black Serial 1977-2000.
                 Colored Serial 2001-24.
1972-75 INTERIM MONTH/YEAR   Black/White

1977   Black/White        2000   White/Blue             2022   Black/Orange
1978   Black/Gold         2001   Black/White            2023   Black/Light Green
1979   Black/Red          2002   Green/White            2024   Black/Red
1980   Red/White          2003   Black/Yellow
1982   Blue/White         2004   Black/Magenta
1983   Black/Yellow       2005   Black/Light Blue
1984   Green/White        2006   Black/Red
1985   Red/White          2007   Black/Yellow
1986   Black/White        2008   Black/Light Green
1987   White/Blue         2009   Black/White
1988   White/Black        2010   Black/Yellow
1989   White/Black        2011   Black/Magenta
1990   Blue/White         2012   Black/Light Green
1991   Red/White          2013   Black/Yellow
1992   Green/White        2014   Black/Orange
1993   Black/White        2015   Black/Light Blue

1994   Magenta/White      2016   Black/Light Green

1995   Blue/White         2017   Black/White

1996   White/Green        2018   Black/Gold
1997   Red/White          2019   Black/Red

1998   White/Black        2020   Black/White

1999   Magenta/White      2021   Black/Light Blue

            MONTH                COUNTY
1988-94     Dark Blue/Beige      Beige/Dark Blue
1994-2001   White/Blue           White/Blue
2002-13     Black/White          Black/White

2014-24     (none)               Black/White