The columns on my Trello board other than the one labelled as "To Do" have a gray fill over them.
I do not have card aging power-up enabled - but this is not a card problem its a column problem. If I rename my "In Progress" column as "To Do" the gradient is removed.
I cannot find where this setting is stored to adjust. Please let me know 
Also not all my boards have this so I am not sure how it got into this state.
Thx