escalating enemies difficult, Toriyama created the Ginyu Force to add more balance to the manga. When Toriyama created the Super Saiyan transformation during the Freeza arc, he gave Goku blond hair because it was easier to draw for Toriyama's assistant, who spent a lot of time blacking in Goku's hair. He also gave him piercing eyes, based on Bruce Lee's paralyzing glare. Publication Japanese publication Dragon Ball was serialized in the manga anthology Weekly Shōnen Jump from issue No. 51 on December 3, 1984, to No. 25 on June 5, 1995. As the readership of Dragon Ball grew up, the magazine changed to reflect their changing interests. The 519 individual chapters were collected into 42 tankōbon volumes by Shueisha from September 10, 1985, through August 4, 1995. These saw any color or partly colored artwork grayscaled. For the series' 24th anniversary, the tankōbon received new cover art that has been used on all reprints since 2009. Between December 4, 2002, and April 2, 2004, the series was released in a collection of 34 kanzenban volumes that retain the color artwork from its Weekly Shōnen Jump run. This edition received newly drawn cover illustrations, and each volume included a poster of their respective cover image. These new illustrations were initially drawn in ink, scanned into a computer and colored using Corel Painter. Midway through, Toriyama changed to drawing them on a graphics tablet and coloring them with Adobe Photoshop. The December 2012 (cover date February 2013) issue of V Jump announced that parts of the manga would be fully colored digitally and re-released as Dragon Ball Full Color. Twenty volumes, beginning from chapter one hundred and ninety-five and grouped by story arcs, were released between February 4, 2013, and July 4, 2014. Twelve volumes covering the first one hundred and ninety-four chapters were published between January 4 and March 4, 2016. Dragon Ball was also released in a sōshūhen edition that aims to recreate the manga as it was originally serialized in Weekly Shōnen Jump in the same size, with the color pages, promotional text, and next chapter previews, in addition to foldout posters. Eighteen volumes of Dragon Ball Sōshūhen Chō Gōku Den were published between May 13, 2016, and January 13, 2017. English publication The English language version of the Dragon Ball manga is licensed for North America by Viz Media. Viz originally published the first 194 chapters as Dragon