I’ve seen all these videos of the type s models with the red interior dash lights on the gauges it’s red and on the climate control navigation system and head unit and just all other buttons everything’s red.
I’m not really a blue guy red is one of my favorite colors and it really would bring my interior together I’m just not even sure where to start with something like this?

 

I would start with searching and reading the many threads from the past 15 years on this topic.

Start here to at least get a better of idea of how much of your car you will need to disassemble.

https://acurazine.com/forums/3g-tl-2...-first-553557/

It really comes down to if you want the interior illumination as well as all the dash lights, buttons, gauges, etc all red...lots of LED replacements will be required for this journey.