diff --git a/packages/javascript/src/models/flow-meta.ts b/packages/javascript/src/models/flow-meta.ts
index f2b5272..510b45b 100644
--- a/packages/javascript/src/models/flow-meta.ts
+++ b/packages/javascript/src/models/flow-meta.ts
@@ -168,6 +168,17 @@ export interface FlowMetaThemeColorScheme {
   palette: FlowMetaThemeColors;
 }
 
+/**
+ * Size configuration in the v2 theme.
+ *
+ * @experimental This API may change in future versions
+ */
+export interface FlowMetaThemeSize {
+  small?: string;
+  medium?: string;
+  large?: string;
+}
+
 /**
  * Shape / geometry configuration in the v2 theme.
  *
@@ -215,6 +226,17 @@ export interface FlowMetaTheme {
 
   /** Typography configuration for the theme */
   typography?: FlowMetaThemeTypography;
+
+  /** Border configuration for the theme */
+  border?: {width: string; color: string; style: string};
+
+  /** Shadow configuration for the theme */
+  shadows?: FlowMetaThemeSize;
+
+  /** Spacing configuration for the theme */
+  spacing?: {unit: number};
+
+  borderRadius?: FlowMetaThemeSize;
 }
 
 /**
diff --git a/packages/react/src/utils/buildThemeConfigFromFlowMeta.ts b/packages/react/src/utils/buildThemeConfigFromFlowMeta.ts
index 9ad977c..c36ddb2 100644
--- a/packages/react/src/utils/buildThemeConfigFromFlowMeta.ts
+++ b/packages/react/src/utils/buildThemeConfigFromFlowMeta.ts
@@ -76,6 +76,7 @@ const buildThemeConfigFromFlowMeta = (
   }
 
   return {
+    ...flowMetaTheme,
     ...(flowMetaTheme.direction ? {direction: flowMetaTheme.direction} : {}),
     ...(borderRadiusStr
       ? {
diff --git a/packages/vue/src/utils/buildThemeConfigFromFlowMeta.ts b/packages/vue/src/utils/buildThemeConfigFromFlowMeta.ts
index cb4ff47..63b8fac 100644
--- a/packages/vue/src/utils/buildThemeConfigFromFlowMeta.ts
+++ b/packages/vue/src/utils/buildThemeConfigFromFlowMeta.ts
@@ -66,6 +66,7 @@ const buildThemeConfigFromFlowMeta = (
   }
 
   return {
+    ...flowMetaTheme,
     ...(flowMetaTheme.direction ? {direction: flowMetaTheme.direction} : {}),
     ...(borderRadiusStr
       ? {