Viewer nodes in compositor now show the eye icon when they are active, so after https://projects.blender.org/blender/blender/pulls/134949 both geometry nodes viewers and compositor viewers look the same. The only remaining difference is that in geometry nodes, clicking on the eye icon deactivates the viewer and the node tree output is shown instead. This is not possible in the compositor currently, because at least one viewer must be active in the node tree. Pull Request: https://projects.blender.org/blender/blender/pulls/134417