When examing message ratings some appear to have a white glow and some have a golden glow which is a bit bigger then the white ones.
What's the difference between these 2 message ratings?
It represents the high-rated messages. At the bottom right corner of the message window there is an appraisal count, if it reaches some point it will glow. I'm not sure of the exact number.
As far as I know (and if it's the same as Demon's / Dark Souls and Bloodborne), there is no difference outside of that.