How do I add tiles that slowly heat up?

Basically i want to make tiles that slowly heat up until the player dies (5 seconds), i want some visual indicator (the tiles turning orange)

a. Make a 5 second long animation that doesn't loop. Check animation frame for death.

b. Use a timer behavior set for 5 seconds. Set your desired effect for red or the opacity of a second red sprite based on Timer.NormalizedProgress(). On timer, kill player. Or set a instance variable that kills the player.

thanks!