app/launcher color?

[filthy1]

Does anyone know how to find the .png file that is for the launcher at the bottom of the home screen I have already customized my notification bar up top and made it 100% transparent but I was wanting to alter the bottom launcher bar too but am a little unsure where it is or what it is named if it is in the framework-res.apk file with the others. So I am asking for a little help...lol

Thanks in advance.