The Hodag Country Festival, founded in 1978, is an outdoor music festival held each summer in Rhinelander, in Oneida County, Wisconsin, United States.
 The first festival, held August 4–6, 1978, featured Freddy Fender and Jana Jae and had an attendance of about 500.
 It is named for the folkloric Hodag, first reported to exist in 1893 in Rhinelander.
Charlie Piggott (born 14 July 1948) is an Irish traditional musician, best known as a founding member of De Dannan and has toured extensively in Europe, Canada, and the US.
 He grew up playing music in County Cork, where his first instrument was the button accordion.
 In the early 1970s Piggott played banjo in sessions at Galway's Cellar Bar with Frankie Gavin (fiddle), Alec Finn (bouzouki) and Johnnie "Ringo" McDonagh (bodhrán).
 In 1973, the group Dé Dannan was formed from sessions at Tigh Hughes, An Spidéal, Co.
 Galway.
 Piggott plays in the old style and many of his seminal recordings have caused him to be hailed as "one of the most influential Irish banjoists of the generation", but after damaging his index finger in an accident on tour he reverted to playing the melodeon.
 In 1976, he was a featured artist of the Smithsonian Institution, at the Festival of American Folk Life, for the American bicentennial.
 Today he plays a Black Dot Hohner Double-Ray, tuned C#/D. Piggott has revived many rare traditional melodies and has a reputation for performing them in accordance with the ethos of older players who have passed the music on.
April Verch is a Canadian fiddler and step dancer raised in the community of Rankin, Ontario, located approximately 15 km southwest from Pembroke, Ontario.
 She attended Berklee College of Music in Boston before embarking on her professional career.
 While she is best known for playing traditional Ottawa Valley style fiddle tunes, Verch's repertoire branches into many other fiddle styles.
 She has appeared as performer and teacher at Mark O'Connor's Fiddle Camps.
John Cowan Hartford (December 30, 1937 – June 4, 2001) was an American folk, country and bluegrass composer and musician known for his mastery of the fiddle and banjo, as well as for his witty lyrics, unique vocal style, and extensive knowledge of Mississippi River lore.
 His most successful song is "Gentle on My Mind" which won three Grammy Awards and was listed in "BMI's Top 100 Songs of the Century".
 Hartford performed with a variety of ensembles throughout his career, and is perhaps best known for his solo performances where he would interchange the guitar, banjo, and fiddle from song to song.
 He also invented his own shuffle tap dance move, and clogged on an amplified piece of plywood while he played and sang.
Jana Jae (born August 30, 1942) is an American country and bluegrass fiddler.
 She gained national fame by appearing on the nationally broadcast CBS/syndicated television series "Hee Haw" as part of Buck Owens's band in the 1970s.
 Prior to her work with Owens, she won the Ladies' Division National Fiddling Championship.
 Her trademark is playing a blue fiddle.
Brenda J. Hunter is an American musician and composer best known as a hammered dulcimer player.
 She also plays Irish fiddle, Celtic harp, and classical piano, with the latter influence evident in her particular style on the dulcimer and harp.
 She won the National Championship in 1995 at the Walnut Valley Festival in Winfield, Kansas, receiving as her prize a Masterworks hammered dulcimer built by Russell Cook.
 She has also played a Rick Thum instrument, and currently uses a Nick Blanton Compact model on stage.
 She performs and teaches nationally on hammered dulcimer, also performs on solo Celtic harp, plays fiddle and hammered dulcimer with Celtic trio Banshee in the Kitchen, and was previously with Celtic duo Briar Rose.
Wild Willy Barrett (born Roger John Barrett – 30 May 1950) is an English experimental musician and multi-instrumentalist, best known for his collaborations with John Otway.
 His musical style has included folk, blues, psychedelia, pop and punk rock and his live performances are punctuated with his dry humour and onstage wit.
 He is known for virtuoso fiddle playing, ability with a great number of stringed instruments, and playing slide guitar with a whole raw egg (known as egg-necking).
 During recent Otway/Barrett performances, he has also introduced the 'wah wah wheelie bin'.
Peter Horan (1926 – 17 October 2010) was an Irish flute and fiddle player from Killavil, County Sligo), who is known for having developed a unique style influenced by the local irish fiddling tradition.
 He was called "one of the country's best known flute and fiddle players" when he died.
Fedde Le Grand (born 7 September 1977 in Utrecht) is a Dutch house DJ and producer.
 He is best known for his chart-topping 2006 song "Put Your Hands Up 4 Detroit".
 Le Grand is a perennial headliner at renowned EDM festivals such as Ultra Music Festival and Tomorrowland and for the majority of the year tours internationally at major night clubs.
 Le Grand is also known for his remixes of popular artists such as Coldplay, Michael Jackson, Shakira, Rihanna, Mariah Carey, Timeflies, Naughty Boy, and Martin Solveig.
Jon Boden (born 17 March 1977) is a singer, composer and musician, best known as lead singer and main arranger of Bellowhead.
 His first instrument is the fiddle and he is a leading proponent of "English traditional fiddle style" and also of "fiddle singing", both of which he employed in Bellowhead, in the duo Spiers & Boden, and previously as a member of Eliza Carthy’s Ratcatchers.

Question: This first headliner Hodag Country Festival is best known for playing which color fiddle? 
Answer: blue