diff --git a/crates/engine/src/cmd/graph/tests.rs b/crates/engine/src/cmd/graph/tests.rs
index cefadcda76..a48f012e40 100644
--- a/crates/engine/src/cmd/graph/tests.rs
+++ b/crates/engine/src/cmd/graph/tests.rs
@@ -890,6 +890,9 @@ fn aligned_paint_rows_of_a_graph_designs_art_edit_the_equal_rows_of_the_other_ob
     assert_eq!(now.items[0].paint(), &green);
     let now = fill(&mut s, "paint.invert", json!({"ids": ids, "item": 1, "aligned": true}));
     assert_eq!(Some(s.last_solid), now.items[0].paint().color(), "the inverted color is the last color, not the art's");
+    // Without `aligned`, the art is left out and the item is a row of the mark.
+    let now = fill(&mut s, "paint.invert", json!({"ids": ids, "item": 0}));
+    assert_eq!(Some(s.last_solid), now.items[0].paint().color(), "the mark's inverted color is the last color, not the art's");
     let now = fill(&mut s, "paint.editGradient", json!({"ids": ids, "item": 1, "aligned": true, "kind": "linear"}));
     let Paint::Gradient(g) = now.items[0].paint() else { panic!("{:?}", now.items[0].paint()) };
     assert_eq!(&s.last_gradient, &**g, "the mark's new gradient is the last gradient");
@@ -926,6 +929,9 @@ fn aligned_paint_rows_of_a_graph_designs_art_edit_the_equal_rows_of_the_other_ob
         ("paint.setFill", json!({"ids": [art.0], "item": 1, "aligned": true, "color": "#00ff00"}), "no appearance item 1"),
         ("stroke.set", json!({"ids": [art.0], "item": 1, "aligned": true, "weight": 5}), "appearance item 1 is not a stroke"),
         ("paint.editGradient", json!({"ids": [art.0], "item": 1, "aligned": true, "kind": "linear"}), "no appearance item 1"),
+        // The weight steps take no row: they step each object's active or top stroke.
+        ("stroke.weightUp", json!({"ids": ids, "item": 2}), "unknown parameter `item`"),
+        ("stroke.weightDown", json!({"ids": ids, "aligned": true}), "unknown parameter `aligned`"),
     ] {
         let defaults = format!("{:?}", (&s.paint.fill, &s.paint.stroke, &s.last_gradient));
         let e = s.execute(cmd, &p).unwrap_err().to_string();
diff --git a/crates/engine/src/cmd/paint.rs b/crates/engine/src/cmd/paint.rs
index 91e1efdbe3..6e2071d7f8 100644
--- a/crates/engine/src/cmd/paint.rs
+++ b/crates/engine/src/cmd/paint.rs
@@ -1025,7 +1025,7 @@ fn proxy_recolor(s: &mut Session, p: &Value, cmd: &str, label: &str, f: &dyn Fn(
                     ItemTarget::Item { index, .. } => Some((id, Some(index))),
                     ItemTarget::Top => None,
                 }),
-                None => ids.first().map(|id| (*id, Some(index))),
+                None => targets.first().map(|id| (*id, Some(index))),
             };
             let mut changed = 0;
             edit_items(s, &targets, item, of, cmd, label, !stroke, |n, i| {