Zolo Liberty+ Issue : abnormal light and no sound on the left earbud

My only left earbud has no sound and displayed abnormal color (not white or red) of light as the following pic.

I tried reset the earbuds but it doesn’t solve the problem. The right one is fine.

What status of the light of the left earbud indicate for?

I realize that it has been over 2 years since this was posted, but I just had this happen to my Liberty+ earbuds, except it is the right earbud in my case. Is there any fix for this faint pinkish light? Or is this now just a expensive (small) paperweight?