Add some C++ scopes to dark+ and light+ themes

Part of #80783

extensions/theme-defaults/themes/dark_plus.json

@@ -170,6 +170,73 @@
 			"settings": {
 				"foreground": "#d7ba7d"
 			}
+		},
+		// Scopes that are potentially C++ only follow
+		{
+			"scope": "source.cpp entity.name",
+			"settings": {
+				"foreground": "#C8C8C8"
+			}
+		},
+		{
+			"scope": "source.cpp keyword.control.directive",
+			"settings": {
+				"foreground": "#9B9B9B"
+			}
+		},
+		{
+			"scope": "source.cpp entity.name.function.operator",
+			"settings": {
+				"foreground": "#B4B4B4"
+			}
+		},
+		{
+			"scope": "source.cpp entity.name.function.preprocessor",
+			"settings": {
+				"foreground": "#C586C0"
+			}
+		},
+		{
+			"scope": "source.cpp entity.name.label",
+			"settings": {
+				"foreground": "#C8C8C8"
+			}
+		},
+		{
+			"scope": "source.cpp entity.name.operator.custom-literal",
+			"settings": {
+				"foreground": "#DADADA"
+			}
+		},
+		{
+			"scope": "source.cpp entity.name.operator.custom-literal.number",
+			"settings": {
+				"foreground": "#B5CEA8"
+			}
+		},
+		{
+			"scope": "source.cpp entity.name.operator.custom-literal.string",
+			"settings": {
+				"foreground": "#ce9178"
+			}
+		},
+		{
+			"scope": "source.cpp variable.other.enummember",
+			"settings": {
+				"foreground": "#B8D7A3"
+			}
+		},
+		{
+			"scope": "source.cpp variable.other.property",
+			"settings": {
+				"foreground": "#DADADA"
+			}
+		},
+		{
+			"scope": "source.cpp variable.parameter",
+			"settings": {
+				"foreground": "#7F7F7F"
+			}
 		}
 	]
 }