I hear you on the enter key lol. I do find blue annoying. I would not go limit my wide gamut displays. For the amount of light 103+ keys present it is harsh.
The rgb actually has some nice colors other than white. Although I have no idea if they are good for ones eyes.
The problem with RGB has to do with color mixing, it isn't perfect. However, many people like how the colors are obviously being mixed, with pure colors leaking out a bit on fringes. Some colors produce better results than other, but the white from RGB is usually tainted either pink or blue. Outside of keyboards, quality RGB strips actually have a fourth color, white, RGBW. These produce more accurate colors. RGBW is probably overkill for a keyboard though even if you could find it, unless you are very particular about color matching and want flexibility.
The reason I am telling you this is because RGB LED's aren't very good at doing orange, they jump right to yellow too fast. However, RGBW LED's produce a wonderful orange color.