To boot into fastboot: power off your phone, hold the volume up key and connect the phone to your PC with the USB cable. When the LED turns blue, release the volume key. This is the one you need for CWM.
To boot into flashboot (for flashing firmwares using Flashtool) you hold the volume down key instead.
To boot into recovery: press the volume up key while the LED is pink as you wrote. It won't work until you install CWM.