Hit F12, click on console, paste this in: document.body.style.backgroundColor = "beige";
Hit enter
You can play around with other known colors, there is also bgColor Font colors, and other atributes too. A css stylesheet can be used too.
I could help them big time, but I need help even bigger. I have automated stuff like this before and was almost finished until I was chemically attacked which left me rolling on the floor for 7 months before I got it under control. Imagine 10 days without sleeping? No one can imagine that until they go through it themselves.