Ok, Pink Noise is not flat by definition.
But all measurement software and RTA plugins I use give me a flat freq. respons with Pink Noise (unless I change settings), except this one (SQ7). Maybe it’s a decision of A&H to have a more musical result when mixing flat on the meters? Or when tuning a PA system?
My aiming curve is mostly like this but in reverse. +3dB low-end and -1 or -2dB on the hi-end of the curve.