Seems likely that the underlying issue (post 746) is the one identified previously: While there is a Template named “Shade” that can be selected when editing a tile (and its associated colors can be modified using Template Color Editor), the Layout tab JSON refers to Template “Shades” - not “Shade”!!! The result is that you can edit colors for Template “Shade” as you wish, but the dashboard tiles follow some user-inaccessible Template “Shades”.
This was reported in Dashboard Templates - where are they? Can they be modified? References in Layout window - #5 by user2424.
Perhaps identifying Chad’s issue (post 746 above) will motivate corrective action? While I understand there are likely CSS-based means to overcome this, the obvious disconnect in the basic tools should be addressed. Thank you!
