Dark and light yellow internal comments?

Mark Wheeler_un9ybq

Does anyone know why some internal comments are a dark shade of yellow (see examples below)?  It's not your comments or the latest comment so what's the logic?

Most comments are the lighter shade of yellow and on returning to issues the dark shading doesn't always persist.

Thanks

Mark

 

Lucas Modzelewski _Lumo_

Maybe it reflects if the comment was shown to the user, eg if you didn't see it yet, it would be highlighted. For your own comments, those would 'fade away', right away

Fun fact: my old side monitor didn't display those colours at all!