Naively idealistic, continued eating 'right' cereal (6,4)

I believe the answer is:

starry-eyed

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(Other definitions for starry-eyed that I've seen before include "Naively idealistic" , "Romantically optimistic" , "Out of touch with reality" , "Naively enthusiastic" , "Full of unsophisticated optimism" .)

I've seen this clue in The Telegraph.

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