Today I noticed there is a small, but deep, graze on the front of my 2015 white PCX:

Someone must have scraped past me while parked.
What I need is a touch- up pot, just like you buy for cars. Now I spoke to the guy at local Honda garage. He told me "Honda don't sell touch- up paint for bikes", and he directed me to a company called R S Motorbike paints in Hertfordshire.
Do I need to buy the touch- up paint from them? The 2015 "pearlescent" white is a different shade of white to the previous years I believe? So I need to be sure I get the right colour.
Any help is greatly appreciated