well lossa earings, jewlery, necklaces, adornments that glitter...
Scales might just be other pretty shiny colors for decorative purposes..like if they wanted to give themselves stripes for a night, or spots, or patterns, or..something like that. Frith-Rae is more into the adornment than actually "changing her spots" for she feels that red is of course the most beautiful color for a dragon...