its quite simple actually.cheap ones give crappy results.
but it also depends on the intensity...like 6000k ones are white-ish sumtimes muddy like u mentioned.the 8000k ones are the clear ones.if im not mistaken.
I'm looking for a lip for my air intake system.
Pls take a look at the attached pix below & kindly advice if there's a shop that could custom make the particular parts.