Within the Layer Menu, Layer Cards represent the different layers of data such as Trees, Counties, and Selected data. The status of each Layer Card only affects how that layer is displayed on the map for that user.
Yellow Layer Cards are “Selected Layers”. When you use map select tools (like the select by rectangle tool) to select features on the map or run a search, the matching features will be highlighted on the map. When a Tree is selected, it is typically highlighted yellow. Hiding a “Selected Layer” would temporarily turn off the yellow highlighting for that layer on the map.
Green Layer Cards are just called “Layers”. This is usually where work is being performed on a regular basis, such as Trees. Hiding a Tree layer would temporarily hide the trees on the map.
Gray Layer Cards are “Reference Layers”. These usually represent reference-only data (data that is not usually edited but is helpful to see on the map), such as Counties. Hiding a Counties layer would temporarily hide the county boundaries from the map.
Active Layers can be temporarily hidden from the map by clicking the Show/Hide (eye icon) on that layer’s Card. This only affects the map for that user. By using Layer Cards, each user can decide which layers draw on top or to hide layers from their map if they don’t plan to use them.