fingus/scienide brings you a new splashscreen and icon for OWB Browser. 

Just copy the splash.png and OWB.icon to your OWB Progdir. Check the Tooltype of
the OWBLauncher called "SPLASHIMAGE" it should look like this:

SPLASHIMAGE=splash.png

OWB icon have very big resolution of 256x256 pixels. Be sure to use the
Icon-scaling shipped with OS4.1 Update1.