Costume

Palette swaps, also known as costumes and color changes, are a feature in Super Smash Flash 2 and Yeah Jam Fury that allows characters to swap between different appearances with different sets of colors and outfits.

In Super Smash Flash 2
Every character in Super Smash Flash 2 has at least eight different palette swaps, including the default design, with the main purpose of distinguishing players that are using the same character and used for personal preference. This is one of the many features carried over from the Super Smash Bros. games to Super Smash Flash 2 and, as such, was absent from the original Super Smash Flash.

Most palette swaps are simple tints and hues applied to the default design of the character, with each one meant to represent a separate color or style. However, certain characters also have palette swaps where they wear different kinds of clothing or accessories, such as hats and bows which often keep the trend of separate colors.

Players can choose their palette swaps from the character selection screen. In Free for All matches, players can select any of the palette swaps their characters have available, and each one can only be picked by a player at a time. In Team Battle, characters can only change color by changing teams (which only supports three colors: red, green and blue). If team members choose the same characters, the second will have a lighter tint applied to their character; a third member will have a darker tint.

In Online matches, if two players select the same palette swap, the host is forced to use the default color while the other player keeps the color they have chosen. If both players pick the default color, the host uses the secondary color of the character.

List of palette swaps
Most characters have slightly altered hues for their Team Battle costumes; unless the difference is significant, team colors won't be listed as an alternate color.

Stats

 * has the most color changes with 20.

In Yeah Jam Fury
After clearing the final level of Yeah Jam Fury, China Shop, the player unlocks the option to change the color palettes of each playable character. When activated, each character will be wearing a golden turbian, a golden jacket, green earmuffs, a white shirt, and black pants. In Style-themed and Desert-themed levels, their palettes are unaffected. Much like in SSF2, these changes are purely cosmetic and do not affect gameplay.

Trivia

 * In SSF2, palette swaps were first presented in v0.4a of the demo as simple tints ranging from red, green and blue, solely for the purpose of Team battles. This remained the same until v0.9a, which incorporated more complex color changes, replacing the old tints.
 * Selecting Zelda and Sheik in the same match in SSF2 can result in them both using the same palette swap, simply by switching from one to the other on the character selection screen. Then, by using Transform, there can be two identical Zeldas or Sheiks in the same match.
 * It was originally planned for Yeah Jam Fury to include additional unlockable palette swaps, including one that switches the main characters Yeah, Jam, and Fury to female counterparts Yeanna, Jammi, and Furia, respectively.
 * Unlocking the palette swaps in YJF unlocks the Unlocked Cool Clothes! trochieval.