Theme: Parallax lite

Hi,

The theme I use has a lot of orange in it for various things, the menu bar, the title text, the colour of any bold text, a mailing list box and a return arrow in the bottom right hand corner.

Is there a simple way to change all the orange to a green colour on the whole website or would I have to figure out how to change each of the elements individually?

Essentially I want to change everything orange to green.

Any help would be much appreciated.

Thanks