And a kiss brings all three into contrast but if it is 'on the grey' it is not fully realized until it is in bloom. A man can tell the girl many things, that A rose is a mixture of power, pleasure, and pain.
'A kiss from a rose on the grey' means you can't quite see the rose yet, but when you get kissed the fragrance is strong. As the girl shines her light on the darkness, which is the boy, they discover parts of himself that feels strange because it was not known to him without the girl, yeah. The beam of light reveals what can be seen and as the beam moves, where it was becomes grey and where it is going turns grey before the beam hits it.
The lighthouse is the girl, the Rose is the girl, I think the seal song is a story of a lighthouse at night. 'On the grey' is a strange phrase that cryptically arouses curiosity.
