Thanks for that Ian, that's really helpful and clears a lot of things up.
I agree with you on the blue tint bulbs, would you recommend or have any experience with HID conversion kits? I've seen some on ebay (below).
https://www.ebay.co.uk/itm/BMW-5-Ser...from=R40&rt=nc
https://www.ebay.co.uk/itm/HID-XENON...sid=m570.l1313
Also, do you have a link for these nightbreaker bulbs you mentioned?
Thanks in advance.