After several rapidly-iterated versions, storm99999’s Calibration Settings hack is branching out from the Nexus One. Now at version 4.1, the hack has morphed into a standalone application with a GUI allowing you to set individual levels for each of the Red, Blue and Green subpixel channels.
It also no longer requires CyanogenMod 6 – I have it running fine on my rooted, stock FRF91 Nexus One. A user has reported that it is working well on their Samsung Galaxy S running the leaked JP3 firmware. This is especially good news because of wide-spread complaints about blue tinting on the SGS’s Super AMOLED panel. It’s quite possible that this will work on any Android device if you have SuperUser permissions.