Dunno why I didn't do this a while back,
but heres a custom SETI skin for
Boinc..
and then follow these steps:
1) make a copy of one of the existing skins.
(on windows theyre at C:\Program Files (x86)\BOINC\Skins
2) Copy it to a non C: folder so you can edit it without admin permissions.
3) Use the template file to replace your own background and logo. Save over the existing png file
eg: in the screenshot below its the file called "background_image.png
4) (you can skip this step if you like)
Open the "skin.xml" file in notepad and update all relevant links and names
eg:
5) save and close the cml file, rename this folder to your skin's name. Copy it to the Boinc skin directory, on windows -
C:\Program Files (x86)\BOINC\Skins
6) exit and reopen boinc.
7) In the top menu go to View/Skin and click on your skin.
Have fun!