Yeah, apparently pink noise is even more helpful for many of us than white, here is a blurb from the site about it:

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Pink noise is a sound that sounds a bit like the sea and has all frequencies combined together. AMS creates Modified Pink Noise, pink noise with a spectrum most similar to voice. This is proven to be the most effective sound to prevent hearing background conversations. So just like a background conversation would be less likely to be overheard at the sea, a background conversation is less likely to be overheard when AMS is playing.

The added advantage of pink noise, like the sound of the sea, is that while you notice the sound when it first turns on, after a short while the brain 'turns it off' so you stop noticing it. The masking effect however continues.

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It is helping me not only with voices but also with the general thumps and slams and creaks and roars of apartment life. Even softened some construction noise.

I found this quote elsewhere also on a technical acoustic site: "Since pink noise has relatively more bass than white noise, it sounds more like the roar of a waterfall than like the higher hissing sound of white noise."