diff --git a/src/button/Button.module.css b/src/button/Button.module.css
index dc7573d44..0ec5cf30e 100644
--- a/src/button/Button.module.css
+++ b/src/button/Button.module.css
@@ -5,10 +5,6 @@ SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 
-.endCall > svg {
-  color: var(--stopgap-color-on-solid-accent);
-}
-
 .rotate > svg {
   animation: spin 1s linear infinite;
 }
diff --git a/src/button/Button.tsx b/src/button/Button.tsx
index 0e29512c6..b8d052d6a 100644
--- a/src/button/Button.tsx
+++ b/src/button/Button.tsx
@@ -135,21 +135,12 @@ interface EndCallButtonProps extends ComponentPropsWithoutRef<"button"> {
   size?: "md" | "lg";
 }
 
-export const EndCallButton: FC<EndCallButtonProps> = ({
-  className,
-  ...props
-}) => {
+export const EndCallButton: FC<EndCallButtonProps> = (props) => {
   const { t } = useTranslation();
 
   return (
     <Tooltip label={t("hangup_button_label")}>
-      <CpdButton
-        className={classNames(className, styles.endCall)}
-        iconOnly
-        Icon={EndCallIcon}
-        destructive
-        {...props}
-      />
+      <CpdButton iconOnly Icon={EndCallIcon} destructive {...props} />
     </Tooltip>
   );
 };
diff --git a/src/index.css b/src/index.css
index ad18e25df..660745692 100644
--- a/src/index.css
+++ b/src/index.css
@@ -28,12 +28,6 @@ layer(compound);
   --font-size-title: calc(24px * var(--font-scale));
   --font-size-headline: calc(32px * var(--font-scale));
 
-  /* These colors are needed during the transitionary period between the old and
-  new Compound design systems, but should be removed ASAP */
-  --stopgap-color-on-solid-accent: var(--cpd-color-bg-canvas-default);
-  --stopgap-background-85: rgba(255, 255, 255, 0.85);
-  --stopgap-bgColor3: #444;
-
   --cpd-color-border-accent: var(--cpd-color-green-800);
   /* The distance to inset non-full-width content from the edge of the window
   along the inline axis. This ramps up from 16px for typical mobile windows, to
diff --git a/src/input/Input.module.css b/src/input/Input.module.css
index 869416b67..6c229f1c5 100644
--- a/src/input/Input.module.css
+++ b/src/input/Input.module.css
@@ -173,14 +173,6 @@ Please see LICENSE in the repository root for full details.
   border-color: var(--cpd-color-border-disabled);
 }
 
-.checkbox svg {
-  display: none;
-}
-
-.checkbox svg * {
-  stroke: var(--stopgap-color-on-solid-accent);
-}
-
 .checkboxField input[type="checkbox"]:checked + label > .checkbox {
   background: var(--cpd-color-text-action-accent);
   border-color: var(--cpd-color-text-action-accent);
diff --git a/src/room/__snapshots__/InCallView.test.tsx.snap b/src/room/__snapshots__/InCallView.test.tsx.snap
index 935a1c171..d365b3605 100644
--- a/src/room/__snapshots__/InCallView.test.tsx.snap
+++ b/src/room/__snapshots__/InCallView.test.tsx.snap
@@ -405,7 +405,7 @@ exports[`InCallView > rendering > renders 1`] = `
         </button>
         <button
           aria-labelledby="_r_14_"
-          class="_button_1nw83_8 _endCall_204dcb _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
+          class="_button_1nw83_8 _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
           data-kind="primary"
           data-size="lg"
           data-testid="incall_leave"
diff --git a/src/room/__snapshots__/LobbyView.test.tsx.snap b/src/room/__snapshots__/LobbyView.test.tsx.snap
index 7657e20d2..0c8d8b642 100644
--- a/src/room/__snapshots__/LobbyView.test.tsx.snap
+++ b/src/room/__snapshots__/LobbyView.test.tsx.snap
@@ -205,7 +205,7 @@ exports[`LobbyView > renders with AppBar android 1`] = `
         </button>
         <button
           aria-labelledby="_r_40_"
-          class="_button_1nw83_8 _endCall_204dcb _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
+          class="_button_1nw83_8 _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
           data-kind="primary"
           data-size="lg"
           data-testid="incall_leave"
@@ -436,7 +436,7 @@ exports[`LobbyView > renders with AppBar ios 1`] = `
         </button>
         <button
           aria-labelledby="_r_54_"
-          class="_button_1nw83_8 _endCall_204dcb _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
+          class="_button_1nw83_8 _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
           data-kind="primary"
           data-size="lg"
           data-testid="incall_leave"
@@ -817,7 +817,7 @@ exports[`LobbyView > renders with header and participant count 1`] = `
         </button>
         <button
           aria-labelledby="_r_q_"
-          class="_button_1nw83_8 _endCall_204dcb _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
+          class="_button_1nw83_8 _has-icon_1nw83_60 _icon-only_1nw83_53 _destructive_1nw83_110"
           data-kind="primary"
           data-size="lg"
           data-testid="incall_leave"