"mottled" in the verb sense
1. mottle, streak, blotch
mark with spots or blotches of different color or shades of color as if stained
2. mottle, dapple, cloud
colour with streaks or blotches of different shades
"mottled" in the adjective sense
1. dappled, mottled
having spots or patches of color
Source: WordNet® (An amazing lexical database of English)
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