There is currently NO Blackberry sound app that has brown and pink noise. Pink noise and especially brown noise is a lot better than white noise for masking deeper sounds like footsteps, door closes, etc.
PLEASE add brown and pink noise to the White Noise blackberry app! Surely its very simple to do.
Both my girlfriend and I purchased the White Noise app and sorely miss the brown noise function that we had in our free Android sleep sound generator app.
You could even make the graphic for it the same as the white noise VU meter bars, but just brown and pink in color. :D