Sorry - I wasn't trying to being rude with my "kitchen grime", but it's really hard to tell what something truly looks like from a photograph.

If you already know what the reality is, you can see it in the image, but if you don't, you can interpret things wrongly.
We are looking at something that is three dimensional, in a 2D image.
Bright sunshine might well have done something to make the surface appear shinier.
I am pleased to hear the lustre doesn't wash off.
