error message for unopened close paren in value

src/value/parse.rs

@@ -606,7 +606,7 @@ impl Value {
                     Ok(IntermediateValue::Op(Op::Div))
                 }
             }
-            ':' | '?' => Err("expected \";\".".into()),
+            ':' | '?' | ')' => Err("expected \";\".".into()),
             v if v.is_control() => Err("Expected expression.".into()),
             v => {
                 dbg!(v);

tests/error.rs

@@ -36,3 +36,7 @@ error!(
     backslash_as_last_character,
     "a {colo\\: red;}", "Error: expected \"{\"."
 );
+error!(
+    close_paren_without_opening,
+    "a {color: foo);}", "Error: expected \";\"."
+);