This Article is from “This blog makes you happy”
There are some secret things to discover on the Nokia N9. One thing I found today is that there is a place for a 120x120px operator logo on the standby screen below the clock. You can set a black/white PNG image for that and it looks very nice and unique.
There are two ways to do this, but first we need a nice image. I used this small tux:

The picture must have a maximum size of 120 x 120 pixel and can only consist of black and white.
GUI method
You can use an application called LPMCustomizer for this. Download it here: http://my-meego.com/software/applications.php?name=LPMCustomizer&faq=13&fldAuto=406
Just open the debian package with the N9 and it should install the application automatically. This app doesn’t work for me so I tried the terminal way.
Terminal method
First copy the image to a folder you normally don’t see so that you can’t delete the image by accident. I copied it to “/home/user/” with this command:
cp /home/user/MyDocs/Pictures/tux_bw.png /home/user/standby.png
Now you can just open the Terminal application and enter the following command
gconftool-2 -t string -s /desktop/meego/screen_lock/low_power_mode/operator_logo /home/user/standby.png
When everything goes right your standby scren should look like this now:

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6 Response Comments
I wonder why only b&w. Is there not even any greyscale?
Is it true that displaying a primary colour uses less energy than displaying white – ie only uses one of the RGB LEDs rather than all three?
When the display switching to standby it consumes less power. That is because of disabling colors.
Hey you can copy and paste.
But writing some text on your own is a cool thing too.
Maybe you try that next time.
Awesome
Certain colours works great and it doesn’t seem to have much additional impact on the battery life than a white logo or no logo.
I’ve created a few free logos for use with the app here:
http://nokiainspired.blogspot.com/2011/11/customising-nokia-n9s-lock-screen-logo.html
Epic. Thanks man