Override button color from screen even if color is defined in AppStyle

android/app/src/main/java/com/reactnativenavigation/params/BaseTitleBarButtonParams.java

     }
 
     private void setColorFromScreenStyle(StyleParams.Color titleBarButtonColor) {
-        if (!color.hasColor() && titleBarButtonColor.hasColor()) {
+        if (titleBarButtonColor.hasColor()) {
             color = titleBarButtonColor;
         }
     }