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The dial is very silver and shiny - it's like the aluminium foil wrapper from a kitkat, it's got that way of reflecting light. It's not champagne or yellow in any way.
The bubble thing can be a problem on all of the variants of the SBGW231 design (the hand wound mechanical 37mm case) recently. Apparently it's bubbles in the adhesive they use to secure the crystal.
It's probably more of a problem and more visible with the darker dials. Just make sure you inspect the watch before buying, because how visible it is varies massively from watch to watch.
Yeah, the macro even shows it on mine, sadly! At least it’s practically invisible to the naked eye on my example, unlike the first one they gave me.