diff --git a/demo/src/configs/jimpower/theme.ts b/demo/src/configs/jimpower/theme.ts
index 655c6da45d..5d269d38a9 100644
--- a/demo/src/configs/jimpower/theme.ts
+++ b/demo/src/configs/jimpower/theme.ts
@@ -33,7 +33,7 @@ export const demoThemeJimpower = () => ({
   "label-badge-border-color": "green",
   "paper-listbox-color": "var(--primary-color)",
   "paper-slider-disabled-secondary-color": "var(--disabled-text-color)",
-  "paper-card-background-color": "#434954",
+  "card-background-color": "#434954",
   "label-badge-text-color": "var(--primary-text-color)",
   "paper-slider-knob-start-color": "var(--accent-color)",
   "switch-unchecked-track-color": "var(--disabled-text-color)",
diff --git a/demo/src/configs/kernehed/theme.ts b/demo/src/configs/kernehed/theme.ts
index 078dc5ac93..e1cb10e78a 100644
--- a/demo/src/configs/kernehed/theme.ts
+++ b/demo/src/configs/kernehed/theme.ts
@@ -34,7 +34,7 @@ export const demoThemeKernehed = () => ({
   "label-badge-border-color": "green",
   "paper-listbox-color": "#777777",
   "paper-slider-disabled-secondary-color": "var(--disabled-text-color)",
-  "paper-card-background-color": "#292929",
+  "card-background-color": "#292929",
   "label-badge-text-color": "var(--primary-text-color)",
   "paper-slider-knob-start-color": "var(--accent-color)",
   "switch-unchecked-track-color": "var(--disabled-text-color)",
diff --git a/demo/src/configs/teachingbirds/theme.ts b/demo/src/configs/teachingbirds/theme.ts
index 8861bd0663..34687a23f1 100644
--- a/demo/src/configs/teachingbirds/theme.ts
+++ b/demo/src/configs/teachingbirds/theme.ts
@@ -13,7 +13,7 @@ export const demoThemeTeachingbirds = () => ({
   "paper-listbox-color": "#FFFFFF",
   "paper-toggle-button-checked-bar-color": "var(--light-primary-color)",
   "switch-unchecked-track-color": "var(--primary-text-color)",
-  "paper-card-background-color": "#4e4e4e",
+  "card-background-color": "#4e4e4e",
   "label-badge-text-color": "var(--text-primary-color)",
   "primary-background-color": "#303030",
   "sidebar-icon-color": "var(--paper-item-icon-color)",