[dchest]

They didn't, because, AFAIK it wasn't there in the first place. You probably had some plugin installed -- http://wafflesoftware.net/hexpicker/ or http://www.panic.com/~wade/picker/. Also, some programs, like Acorn, loads their own hex color picker plugin inside the app.

[bburky]

The "DigitalColor Meter" program with the developer tools actually used to include hex values. I actually hadn't noticed the hex values are gone, so thanks lancashire for making me notice. I may need this app now.