Problem description: After dying, the ship turns green, signifying invulnerability. The ship turns blue when it is again vulnerable after a certain time has elapsed. When paused, the ship changes from green to blue, even when the game is paused.
Steps to reproduce: 1. While playing a level, get hit by a bullet. 2. When your ship is restored and colored green, pause the game. 3. Observe as the ship eventually changes from green to blue in the same manner as if the game were not paused.
Desired behavior: When the game is paused, the ship should not change how close it is (in time) to becoming vulnerable again.
