We have colored ones in our cockpit
and they are OK in that use. Inside the boat, we use the warm white ones. These are very close in color to halogen lights - warm and bright.
The colored ones have 3 separate red, green and blue leds, and they produce other colors by mixing these proportionally. White is produced by lighting
all of them. The white color thus produced is not very pleasant - at best resembling a fluorescent light.
Also, these colored ones come in two varieties - one type has repeating units of R, G, B in separate LED's along the strip, while the other type has three smaller RGB LED's in each "bulb".
The first type gives very poor white light, and its other color reproduction is also bad, but it excels at the disco stuff. The second type is much better white and color, but not as good at the disco.