Monstaliner holds up extremely well I think it would be a lot cheaper to tint the garage floor liner and roll that stuff on

 

I used Monstaliner in my interior. Removed the seats and insulation and did the entire floor pan front to rear and it is extremely durable. First used their aluminum primer which is also extremely tough. It's the toughest do it yourself liner material on the market. They also have different color options. I did camel brown color that matches the carpet.

 

I have used a few LED;s from these guys and they have worked out well. Changed my clock to green to match the dash lights, it helped it be seen much better.

https://www.superbrightleds.com/cat/led-gift-ideas/