My WiFi status icon on 4.1 is grey, even when the connection is working fine. Why? I just switched from AOKP to the latest CyanogenMod M-build, and I'm noticing that my WiFi and 3G/H+ icons never switch to blue. This is a bit annoying as usually the grey WiFi icon is an indication that the WiFi I'm connected to isn't actually letting me out onto the Internet, but now they seem to stay grey all the time.

Is there anything I can do to troubleshoot this issue? Is it a known bug? What does the grey icon really mean? I've tried looking around the sync settings as there are some indications this might have something to do with the device not being able to contact the Google servers to sync, but sync is working fine and I'm having no real problems except the fact that it's annoying that the icon is indicating what I've previously interpreted as a problem.

edit It seems that there is an actual problem aside from the cosmetic one: in Google Talk I am completely offline, I get my contact list but it's greyed out. I also don't get notifications from the Gmail app when new mail arrives.

edit2 This was solved by simply removing CM10 and going back to AOKP. I did a full wipe before every install, either this is a bug in CM10 or it's an issue caused by my Titanium backups. Not sure, but the backups worked fine with AOKP.
There is nothing wrong with it. Its the expected/correct behaviour of a freshly installed ROM that does not have Google Apps (gapps) installed. Thus, the telephony/wifi signal will show up as grey.
Its only when that Google Apps (gapps) are installed, then it will show up as blue, this is for ICS upwards.
In Gingerbread, if no gapps is installed, and there's wifi connectivity, its white, when gapps gets installed, it changes to the typical green that is known under Gingerbread.
To resolve this, please install the appropriate gapps suitable for your CM10 ROM.
Edit
I am under the impression that GTalk application and service is part of the GApps hence my comment below to Izzy about this...and seems to backup the fact that if gtalk service is not present, the signal colours do appear different.