I think it makes a difference so yes. Im not a fan of the single red line in the lights. Or the interior red detailing.. I also actually much prefer the grey seats too but I also always much prefered the grey stipped seats in the mk1 series2 GTIs to the earlier series1 cars as I felt the grey and black just looked better.
Personal things though.
Definitely 'personal' cos ALL the things you don't like I love