How would I make a part like this?

The concept is that once I look at a part my screen starts to blur and then the colour correction changesto red.
Once I look away it slowly fades back to normal.
What would I use to make a part like this?
It would be local btw.

You could create a ray. I’m not good with rays so i can’t tell you what to do but you can check this topic.

To make it start blur and make color correction red smoothly you can Tween them by using TweenService.