As you know, there are four Answer types that you can use, but it doesn't mean every Answer will be available for every Answer type. For example, you might find an Answer type made as a Reference but not Public.
GRAY – If a specific type of Answer doesn’t exist, the icon will be grayed out, and you won’t be able to click on it.
BLACK – If that Answer type exists, the icon will be black, and you can click on it.
GREEN – If the icon is green, with a green line above it, the Answer type is currently selected.
View an Answer Type
To select a specific type of Answer, click on its icon at the bottom. Hover over the icon to see the type of Answer you are viewing. 