yep u cant modify oe equipment with tint spray techically becasue as said its E marked and tested for road use then u modify them which is illegal, on this note also keep an eye out for things like cheap aftermarket angel eyes which are often not e marked. To answer your question u will not get the white bottom bits to match the red, i tried. Just tint the whole lot, or do as i tried 1st mask the red bits off spray 2-3 thin even coats, then unmask the red bits and do 2 thin even coats along the whole bottom half. Just so you know the red fades over time aswell and turns to a light pinky colour!