Hello Overdraft,
Regarding the look of painting the lower 'blackish' panels on your L405 to match the body color, please find a listing for a 2013 L405 in Indus Silver on Autotrader in the link attached. It is not Byron Blue and it is not an '18 or '19 updated style, but it may help you see how painting the panels to match body paint will look.
Link:
https://www.autotrader.com/cars-for...searchRadius=0&makeCode1=ROV&modelCode1=RANGE
Regarding the look of painting the lower 'blackish' panels on your L405 to match the body color, please find a listing for a 2013 L405 in Indus Silver on Autotrader in the link attached. It is not Byron Blue and it is not an '18 or '19 updated style, but it may help you see how painting the panels to match body paint will look.
Link:
https://www.autotrader.com/cars-for...searchRadius=0&makeCode1=ROV&modelCode1=RANGE