I'm not sure you can get similar brightness to the Katanas with "yellow" LEDs. Mind the Katanas are the brightest cheap LEDs for projectors while the Nineos are the brightest cheap LEDs for reflector headlights(
BulbFacts | Aftermarket LED Kits Chart - Comparing to Halogen in Reflector Headlights & Foglights)
You could try the BOSLLA Bullet (
Boslla Bullet Series H8/9/11 - The World's first 4 Color LED Headlight - Boslla) and change the mode to 'Yellow' every time you turn on the fogs, but that may be annoying.
I personally used a couple layers of amber and gold colored films, paired with the KASO LEDs(
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1)
You could also try some of the cheap JDMASTAR or ALLA Lightning yellow LEDs and return them if you don't like them(
https://smile.amazon.com/Alla-Lighti...K5E04NFVQA327A)
