Changing to OEM will not be a option because I can't find no one here in Spain that can do that for me

I have now 6000k with PILOT ballast and want to change the bulbs as you suggest to a lower kelvin like 5000k because I'm afraid the 4300k will look to yellow.
I have tAken out the 6000k and put OSRAM night breaker limited edition and the look so yellow that for sure I will take then out