I dont know about adding lighted strips to the trim areas of the dash like in the pic. but when I had my 22' ST I added the ambient lighting kit shown below from Amazon. One light mounter under each of the front seats, at the back, to light up the passenger floors. Each of the other (2) lights were mounted under each side of the dash to light up the drivers and passengers side interior floors. I plugged it all in at the USB port in the console compartment at the dash. I routed and tidied up all cables to where nothing could be seen and it was all nice and neat.
It all worked out well and these lights were dimmable. They were really bright at their highest setting. I have a 25' ST now and it has ambient lighting so I don't need to add anything to this ST.
View attachment 30094