diff --git a/src/material-2-scheme.ts b/src/material-2-scheme.ts
index 8154661..ea3f3ef 100644
--- a/src/material-2-scheme.ts
+++ b/src/material-2-scheme.ts
@@ -31,4 +31,7 @@ export type MaterialDesign2SchemeSource = {
 export type MaterialDesign2SchemeStorage = {
   source?: MaterialDesign2SchemeSource;
   scheme?: MaterialDesign2Scheme;
+  cssVariables?: string;
+  scssVariables?: string;
+  jsVariables?: string;
 };
diff --git a/src/material-3-scheme.ts b/src/material-3-scheme.ts
index 0fad241..0d33e03 100644
--- a/src/material-3-scheme.ts
+++ b/src/material-3-scheme.ts
@@ -54,4 +54,7 @@ export type MaterialDesign3SchemeSource = {
 export type MaterialDesign3SchemeStorage = {
   source?: MaterialDesign3SchemeSource;
   scheme?: MaterialDesign3Scheme;
+  cssVariables?: string;
+  scssVariables?: string;
+  jsVariables?: string;
 };
diff --git a/src/q-scheme.ts b/src/q-scheme.ts
index 9cc001b..b619b48 100644
--- a/src/q-scheme.ts
+++ b/src/q-scheme.ts
@@ -61,4 +61,7 @@ export type QSchemeSource = {
 export type QSchemeStorage = {
   source?: QSchemeSource;
   scheme?: QScheme;
+  cssVariables?: string;
+  scssVariables?: string;
+  jsVariables?: string;
 };
diff --git a/src/swatch_scheme.ts b/src/swatch_scheme.ts
index 42f3016..fce9e49 100644
--- a/src/swatch_scheme.ts
+++ b/src/swatch_scheme.ts
@@ -13,4 +13,7 @@ export type SwatchSchemeSource = {
 export type SwatchSchemeStorage = {
   source?: SwatchSchemeSource;
   scheme?: SwatchScheme;
+  cssVariables?: string;
+  scssVariables?: string;
+  jsVariables?: string;
 };