Question: What is the official color of the college that Joe Holsinger attended?

Context paragraphs:
Peithologian Society: The Peithologian Society was an undergraduate debate society at Columbia University.  It was founded in 1806, four years after Columbia's first literary society, the Philolexian Society, by freshmen who were disenfranchised by Philolexian's requirement that its members be upperclassmen.  Its emphasis on debate, composition, and rhetoric was similar to Philo's literary aims, and the two societies shared other superficial characteristics as well.  Philo adopted light blue as its official color, while Peithologian adopted white (Columbia later appropriated the two hues as its own official school colors).  Whereas Philolexian's symbol was a rising sun, Peithologian's was a star.  Its Latin motto was "Vitam Impendere Vero" meaning, roughly, "To devote one's life to truth."

Munsell color system: In colorimetry, the Munsell color system is a color space that specifies colors based on three color dimensions: hue, value (lightness), and chroma (color purity).  It was created by Professor Albert H. Munsell in the first decade of the 20th century and adopted by the USDA as the official color system for soil research in the 1930s.

Piper High School (Kansas): Piper High School is a public secondary school located in the latent township Piper, Kansas of Kansas City, Kansas, USA operated by Piper USD 203, and serves students of grades 9 to 12.  This school is one of multiple high schools located in Kansas City.  The school colors are purple and white, although black is generally considered a third official color.

Kansas State Wildcats: The Kansas State Wildcats (variously "Kansas State", "K-State" or "KSU") are the intercollegiate athletic teams that represent Kansas State University.  The official color of the teams is Royal Purple, making Kansas State one of very few schools (including also Syracuse and Harvard) that have only one official color; white and silver are generally used as complementary colors.

Makoto Okunaka: Makoto Okunaka (奥仲 麻琴 , Okunaka Makoto ) , nicknamed" Makocchan" (まこっちゃん), is a former member of the Japanese idol group Passpo.  Her official color was pink.

Joe Holsinger: Joe Holsinger was a college football, basketball, and golf player and coach.  Holsinger was a star athlete for the Kansas State Wildcats.  He was then a backfield coach under Charlie Bachman for the Florida Gators, coaching the "Phantom Four" of 1928, and for the Michigan State Spartans.  In 1935, he became the head basketball and golf coach for the Dayton Flyers.

Charleroi Metro line 1: Line M1 is a line of the Charleroi Metro in Belgium operated by TEC Charleroi, running from the "Monument" tram stop in Anderlues to the metro loop around central Charleroi, before heading back to Anderlues.  Line M1 was created on 27 February 2012 to replace former lines 88 and 89 after completion of the loop around central Charleroi.  Introduction of new line numbers (M1, M2, M3 and M4) in February 2012 coincided with the formal association of colors to line numbers.  The official color for line M1 is red.

Columbia blue: Columbia blue, also known as Jordy blue, is a light blue tertiary color named after Columbia University.  The color itself derives from the official hue of the Philolexian Society, the university's oldest student organization.  The official Columbia color is Columbia blue, defined as Pantone 290 (Hex #C4D8E2).  It is often mistaken for the official color of Columbia Athletics, defined as Pantone 292 (Hex #62A8E5), which is slightly darker.

Charleroi Metro line 2: Line M2 is a line of the Charleroi Metro in Belgium operated by TEC Charleroi, running from the "Monument" tram stop in Anderlues to the metro loop around central Charleroi, before heading back to Anderlues.  Line M2 was created on 27 February 2012 to replace former lines 88 and 89 after completion of the loop around central Charleroi.  Introduction of new line numbers (M1, M2, M3 and M4) in February 2012 coincided with the formal association of colors to line numbers.  The official color for line M2 is green.

Bates Bobcats: The Bates Bobcats are the athletic teams of Bates College.  The college's official mascot is the bobcat, and official color is garnet.  The school sponsors 32 varsity sports (16 men's, 16 women's), most of which compete in the Division III New England Small College Athletic Conference (NESCAC).  The school's men's and women's ski teams and men's and women's squash teams compete in Division I.  Bates has rivalries with Princeton in Squash and Dartmouth in Skiing and selected hockey bouts.  The college also competes with its Maine rivals Bowdoin and Colby in the Colby-Bates-Bowdoin Consortium (CBB).  This is one of the oldest football rivalries in the United States.  This consortium is a series of historically highly competitive football games ending in the championship game between the three schools.  Bates has won this championship at total of twelve times including 2014, 2015, and in 2016 beat Bowdoin 24–7 after their 21–19 abroad victory over Colby.  Bates is currently the holder of the winning streak, and has the record for biggest victory in the athletic conference with a 51-0 shutout of Colby College.  The three colleges also contest the Colby-Bates-Bowdoin Chase Regatta.  The college is the all-time leader of the Chase Regatta with a total of 14 composite wins, followed by Colby's 5 wins, concluded with Bowdoin's 2 wins.

Supporting paragraphs: Joe Holsinger Kansas State Wildcats
Answer: Royal Purple