Instant, U (1) Choose one - Counter target spell if it's red; or destroy target permanent if it's red.1 "Heed the lessons of our time: the forms of water may move the land itself and hold captive the fires within." -Gustha Ebbasdotter, Kjeldoran Royal Mage
Illus. Kaja Foglio
You can target any spell or permanent, it need not be red. It just does not do anything unless the color matches. [D'Angelo 1995/06/09]
The decision to counter a spell or destroy a permanent is a decision made on announcement before a target of the proper type is selected. If the spell is redirected, this mode cannot be changed, so only targets of the selected type are valid. [WotC Rules Team 1995/09/22] See Rule G13.13 on Modal spells.