Re-installed leopard and for this app, help?

EDIT: Apologies for the title

It was an app used to change the appearance of Mac OS X, the color of the toolbar for example and the color of the dock, i completely forgot its name but i have a picture here:



i would really appreciate the help, after going 2 years without the original appearance, as weird as this sounds i cant concentrate when doing my work, i have tried for at least an hour now but in the end all i could do is find a picture of the app from an old picture of my desktop and upload it, i hope it helps!