"Warm White" LEDs are neither. It's very hard to get a convincing warm white out of an LED, by the nature of LEDs - LEDs start with single wavelengths of light, and you're somehow trying to make it look like it's a continuous distribution of wavelengths. So they use multiple LED elements, phosphors, and the like, and they end up with something that looks kinda-white (by virtue of the fact that humans sense color with 3 types of cone cells, and you can make white by mixing three other colors in the right ratios), at least until you pass it through something that blocks some colors of light more than others - it most cases, this will produce a different color than you would otherwise expect (hard to explain without drawing it out). That's why "warm white" LEDs look green under plastics. The whites actually look okay in the spotlights pointing down at the PF, except for the strobing, which pretty well kills that use of them.

I like LEDs for insert lighting on some machines (they look great in my No Fear, but terrible in TZ imo. Actually, from pictures, i'd even go so far as to say they look good in Ritchies and bad in Lawlors. NGG and TZ and FH look like crap with LEDs, but NF and Tomcat look great, and ACDC looks good too with LEDs in inserts (though not in the GI, ugh!)).

It looks way too harsh with LEDs for general illumination. Even when it's like that from the factory (ex, ACDC LE).