diff --git a/main/themes.js b/main/themes.js
index af6978ce..7fa482f5 100644
--- a/main/themes.js
+++ b/main/themes.js
@@ -263,6 +263,7 @@ function setIconImage(htmlCollectionIcons, imageURL) {
   for (const icon of htmlCollectionIcons) {
     for (const image of icon.getElementsByTagName('image')) {
       image.setAttribute('xlink:href', imageURL);
+      image.setAttribute('href', imageURL);
     }
   }
 }
@@ -278,7 +279,7 @@ function setBinAndZoomIcons(themeName) {
   const zoomIcons = document.getElementsByClassName('blocklyZoom');
 
   if (themeName === 'contrast') {
-    const iconsURL = './images/blocklywhitesprites.svg';
+    const iconsURL = './images/blocklywhitesprites.png';
     setIconImage(binIcon, iconsURL);
     setIconImage(zoomIcons, iconsURL);
   } else {
diff --git a/style.css b/style.css
index 61e581aa..5acb732b 100644
--- a/style.css
+++ b/style.css
@@ -1482,6 +1482,10 @@ button {
   background-color: var(--color-button-bg-hover);
 }
 
+[data-theme='contrast'] .example-tab {
+  color: var(--color-bg);
+}
+
 .example-tab[aria-selected='true'] {
   background-color: var(--color-primary);
   border-color: var(--color-primary);
@@ -1889,10 +1893,6 @@ body.color-picker-open #renderCanvas {
   height: 10px;
 }
 
-[data-theme='contrast'] .menu-item[aria-haspopup='true']:hover .menu-arrow {
-  color: black;
-}
-
 #examples {
   min-width: 100px;
   flex-grow: 1;
@@ -1917,18 +1917,6 @@ body.color-picker-open #renderCanvas {
   background-color: var(--color-menu-hover);
 }
 
-[data-theme='contrast'] .menu-item:hover .menu-label {
-  color: black;
-}
-
-[data-theme='contrast'] #main-menu a:hover {
-  color: black;
-}
-
-[data-theme='contrast'] .menu-item:hover .menu-icon svg {
-  fill: black;
-}
-
 .menu-icon {
   width: 2em;
   min-width: 2em;
@@ -2680,6 +2668,26 @@ svg.blocklyTrashcanFlyout {
   z-index: 1;
 }
 
+/* Flipped below the block (see positionBlockToolbar): the toolbar renders
+   under the block instead of above it, so the caret triangles point up. */
+.fc-block-toolbar.below {
+  transform: translate(-50%, 7px);
+}
+
+.fc-block-toolbar.below::after {
+  top: -7px;
+  bottom: auto;
+  border-top: 0;
+  border-bottom: 7px solid var(--color-border, #ddd);
+}
+
+.fc-block-toolbar.below::before {
+  top: -5px;
+  bottom: auto;
+  border-top: 0;
+  border-bottom: 5px solid var(--color-menu, #f9f9f9);
+}
+
 .fc-block-toolbar.visible {
   opacity: 1;
   pointer-events: auto;
diff --git a/ui/contextmenu.js b/ui/contextmenu.js
index 6c6682ad..c232a3b3 100644
--- a/ui/contextmenu.js
+++ b/ui/contextmenu.js
@@ -882,6 +882,8 @@ export function initContextMenus(workspace) {
       return {
         left: topLeft.x,
         top: topLeft.y,
+        right: bottomRight.x,
+        bottom: bottomRight.y,
         width: bottomRight.x - topLeft.x,
         height: bottomRight.y - topLeft.y,
       };
@@ -903,6 +905,26 @@ export function initContextMenus(workspace) {
       return right === -Infinity ? null : right;
     }
 
+    function getWorkspaceTopEdge() {
+      const div = workspace.getInjectionDiv?.();
+      if (!div) return null;
+      const r = div.getBoundingClientRect();
+      return r.height > 0 ? r.top : null;
+    }
+
+    // Get the position of the jaw start for a hat block to display the context menu
+    function getHatJawTopScreenY(block) {
+      if (block.previousConnection) return null;
+      const jawInput = block.inputList?.find((input) => input.type === Blockly.NEXT_STATEMENT);
+      const connection = jawInput?.connection;
+      if (!connection) return null;
+      const screen = Blockly.utils.svgMath.wsToScreenCoordinates(
+        workspace,
+        new Blockly.utils.Coordinate(connection.x, connection.y)
+      );
+      return screen.y;
+    }
+
     function positionBlockToolbar() {
       if (!toolbarBlock) return;
       const svgRoot = toolbarBlock.getSvgRoot?.();
@@ -914,13 +936,24 @@ export function initContextMenus(workspace) {
       const rect = getOwnBlockScreenRect(toolbarBlock) ?? svgRoot.getBoundingClientRect();
       const blockCenterX = Math.round(rect.left + rect.width / 2);
       blockToolbar.style.left = `${blockCenterX}px`;
-      blockToolbar.style.top = `${Math.round(rect.top)}px`;
       blockToolbar.style.removeProperty('--caret-shift');
 
+      const margin = 8;
+      const workspaceTop = getWorkspaceTopEdge();
+      const minTop = workspaceTop != null ? workspaceTop + margin : margin;
+
+      // Push the context bar below the block if it would be outside the top of the workspace
+      blockToolbar.style.top = `${Math.round(rect.top)}px`;
+      blockToolbar.classList.remove('below');
+      if (blockToolbar.getBoundingClientRect().top < minTop) {
+        blockToolbar.classList.add('below');
+        const jawTop = getHatJawTopScreenY(toolbarBlock);
+        blockToolbar.style.top = `${Math.round(jawTop ?? rect.bottom)}px`;
+      }
+
       // Clamp to viewport, and to the right of the toolbox/flyout so the
       // toolbar is never tucked behind it. Shift the caret opposite so it
       // still points at the block.
-      const margin = 8;
       const toolboxRight = getToolboxRightEdge();
       const minLeft = toolboxRight != null ? Math.max(margin, toolboxRight + margin) : margin;
       const tbRect = blockToolbar.getBoundingClientRect();