diff --git a/src/lv_themes/lv_theme.c b/src/lv_themes/lv_theme.c
index 365fe3aa4..d990912db 100644
--- a/src/lv_themes/lv_theme.c
+++ b/src/lv_themes/lv_theme.c
@@ -106,6 +106,17 @@ void lv_theme_set_base(lv_theme_t * new, lv_theme_t * base)
     new->base = base;
 }
 
+/**
+ * Set a callback for a theme.
+ * The callback is used to add styles to different objects
+ * @param theme pointer to theme which callback should be set
+ * @param cb pointer to the callback
+ */
+void lv_theme_set_apply_cb(lv_theme_t * theme, lv_theme_apply_cb_t apply_cb)
+{
+    theme->apply_cb = apply_cb;
+}
+
 /**
  * Get the small font of the theme
  * @return pointer to the font
diff --git a/src/lv_themes/lv_theme.h b/src/lv_themes/lv_theme.h
index 0a24f5e7d..788766726 100644
--- a/src/lv_themes/lv_theme.h
+++ b/src/lv_themes/lv_theme.h
@@ -206,6 +206,14 @@ void lv_theme_copy(lv_theme_t * theme, const lv_theme_t * copy);
  */
 void lv_theme_set_base(lv_theme_t * new, lv_theme_t * base);
 
+/**
+ * Set an apply callback for a theme.
+ * The apply callback is used to add styles to different objects
+ * @param theme pointer to theme which callback should be set
+ * @param apply_cb pointer to the callback
+ */
+void lv_theme_set_apply_cb(lv_theme_t * theme, lv_theme_apply_cb_t apply_cb);
+
 /**
  * Get the small font of the theme
  * @return pointer to the font