The marker text color is defined in .bg--skinned' with !important, but that doesn't work because .block-header h2` also uses that, and a tag has higher priority in css than a class.
So in all themes, the colour is set to color: #666 !important; which is unvisible with darker theme colours.
The marker text color is defined in
.bg--skinned' with!important, but that doesn't work because.block-header h2` also uses that, and a tag has higher priority in css than a class.So in all themes, the colour is set to
color: #666 !important;which is unvisible with darker theme colours.