Starting with CM7 Nightly #120 we are able to use application icons for the custom application function of the lockscreen! Pretty cool!
However, for those of us who have made custom lockscreen themes this means that updates are in order. There is a new .png file that needs to be addressed, which is the background for the custom app icon. The image name is ic_jog_dial_blank.png.
If you do not update your themes with this image then you will end up with an incomplete theme:
Once you address this image you can match the background to the rest of your lockscreen theme. The icon will always be variable depending upon what app the user selects, but the background can still match:
I just thought I'd share this info with the rest of you guys so that all the themes can be brought up to date. Also, so that all themes going forward can include this image for a completed appearance...