Looking for graphics resources

[Kurten]

Yo guys, im currently developing a visual novel and im in the need of some graphics for use in testing purposes. Mainly for testing artistic stuff like "Does the game UI looks good?", "What colors will fit with each other?", etc, etc. I already have "programmer art" graphics which i have used to test the code itself. Does anyone know any site where you can get some UI graphics?

Thanks

//Kurten