update colors on HEX clipboard paste

src/node_dialog_picker.cpp

@@ -93,7 +93,7 @@ void NodeColorPicker::init_controls()
     m_btn_paste->on_click = [this](Node*)
     {
         std::string s = App::I->clipboard_get_text();
-        std::regex r("#([\\dabcdefABCDEF]{6})");
+        std::regex r("#?([\\dabcdefABCDEF]{6})");
         std::smatch m;
         if (std::regex_search(s, m, r))
         {
@@ -103,6 +103,8 @@ void NodeColorPicker::init_controls()
             uint8_t r = (ul >> 16) & 0xFF;
             auto rgb = glm::vec3(r, g, b) / 255.f;
             set_color(rgb);
+            if (on_color_change)
+                on_color_change(this, rgb);
         }
     };