Half-Life Color Study

This image is important to the game. It shows the cataclysm that sets the entire game. The red areas indicate danger and make it known that there is an emergency. The green indicates a level of toxicity and raw power that serves to double up the danger. Overall, the sense from this scene is that something terrible has just happened.

I have changed the color scheme to cooler colors. Now a gentle bluish purple glow fills the room and the particles might indicate healing or relaxation. The room becomes almost friendly compared to the way it was before.