2017 650 UK colours in the brochure were: Champion yellow (YU1)
Glass Sparkle Black (YVB)
Pearl Glacier White (YWW)
if that's any help at all?
Another thing is the fuel tank o ring recall, done on 'some' 17 and '18 models
here so presumably 2019 models didn't need it?
Also, the 2019 brochure has this boast:
Engine cover hardware and select other fasteners are of a new design that permits the use of Torx or conventional hex-style tools.
You can compare (USA) model years here:
Suzuki there's a grey box with model years to choose from.