Typically specials are neutral unless it specifically states in the card they do extra damage against an element OR if the enemy/you has elemental debuff or resist up the special will be adjusted accordingly to the debuff/resist.
Example: Kashrek elemental red resist will decrease damage done from a kelile/scarlett/colen etc special.
Example: a Jackal yellow elemental debuff on an enemy will cause Joon/Chao/etc to do more damage to that enemy.