update of the trident logo, changing its color to blue, along with additional outlines and a white star background. 1987–1992 In 1987, the Mariners changed its uniform style to traditional buttoned tops and belted pants. Both uniforms incorporated blue piping and a block "Mariners" wordmark in blue with gold and blue outlines. The numbers remained blue, but eliminated the trim outlines. The cap logo was changed to a gold "S". 1993–present The Mariners donned their current uniforms in . The white home uniform originally featured "Mariners" in navy with Northwest Green trim and featured the "compass" logo atop the "M". The grey road uniform originally featured "Seattle" in navy with Northwest Green and white trim; in 2001, the "compass" logo was added in the middle of the "S". In 2015, a silver inline was added to the wordmark of both uniforms, which was also applied to the block letters and numbers. The primary logo is applied to the left sleeve. From 1997 to 2000, the Mariners also wore sleeveless versions of their primary uniforms, accompanied with a navy undershirt. The Mariners have also worn Northwest Green alternate uniforms at some points in their history. The original version was unveiled in 1994 and had "Mariners" in silver with navy and white trim. The next season, the white trim was removed to improve visibility. The Mariners did not wear these uniforms from 1997 to 2010, after which it became a regular part of their uniform rotation. It is currently seen during Friday home games. The navy alternate uniform originally replaced the Northwest Green alternate in 1997 and featured the team name in silver with Northwest Green and navy trim. In 1999, the alternates were updated to feature the city name with the "S" behind the "compass" logo and silver piping; this became their road alternate the following season after a corresponding home navy alternate was introduced. In 2003, the silver piping was removed and the letter and number fonts were changed to match the wordmark. In 2012, after the Northwest Green home alternates were brought back, the navy uniforms were tweaked anew, this time with the city name in front and stylized serifed letters instead of the normal block letters. It is now worn on most road games, though they have also donned them at home on occasion. A navy blue cap that features a ball and compass "S" logo is paired