This may be tacky...

[BRAN]

Hahaha, where did you get that picture of me?

I had those in my case mod (PC) 15 years ago...a nice subtle light source. But those converters make a nasty high frequency sound. Impossible to hear in a car, but still. Not sure, if they still do.
I would try not to have them right in your eyes, they should be e.g. behind the front trims (not an easy task, but who doesn't like a nice challenge?) to create that ambient light we see in nowadays cars.
Less is more (who am I to say that), but I am sure it will work in our Boxsters, too.
My choice would be amber and maybe within the center vents.

Not sure if they are bright enough to lighten up the footwell.

[Starter986]

Had this hardwired in. I put one piece under each of the footwells, and just in front of each seat. Works, and looks, great.

https://www.ebay.com/itm/SURLIGHT-CAR-ATMOSPHERE-STRIP-LIGHTS-LED-MUSIC-12V-MULTICOLOR-4-PIECE-W-REMOTE/372285941047?hash=item56adf8a537:g:qhIAAOSwAHtZ7PH a:sc:USPSFirstClass!92262!US!-1

[particlewave]

Originally Posted by BRAN

But those converters make a nasty high frequency sound. Impossible to hear in a car, but still. Not sure, if they still do.
They do. Wrap the inverter in high density foam.

Not sure if they are bright enough to lighten up the footwell.

I played with it some more last night...with the dome light on, they are not bright enough. However, I don't want the footwell lights bright enough to see with.
After some messing around, I've wired them in with the shifter so they come on with headlights. Gives a nice, very soft ambient glow for night driving.
The original footwell LEDs are back in as well, but with a resistor to dim them down a bit.

Originally Posted by ekam

Must wear this to drive the car...

I'm on it!