This may be a stupid question, But the previous owner of my 200 has changed the sidelights to these white/blue bulbs. Now the main headlights are the standard boring bulbs, but the full beams bulbs are white aswell.. I was about to buy some white bulbs for the main beams when I thought, can i just swap the full beam bulbs with the headlight bulbs? Or will this be hard to do? and the full beams aren't xenon bulbs whereas the headlights are??