Mama, I'd really suggest checking with your pediatrician about that color, it's better to have the doctor look at baby's ears para sure na okay lang, lalo na kung consistent yung kulay na yan.
A few of us mums have had similar concerns, at palagi naming sinasabi sa isa't isa na parang important talaga i-monitor ang ganitong changes, kasi baby's ears are delicate. Once na-clear ng doctor, you'll feel so much better!