housekeeping

src/app/gui/canvas.h

@@ -148,6 +148,11 @@ class Canvas {
   }
   auto mutable_labels(int i) {
     if (i >= labels_.size()) {
+      int x = i;
+      while (x >= labels_.size()) {
+        labels_.push_back(ImVector<std::string>());
+        x--;
+      }
       labels_.push_back(ImVector<std::string>());
     }
     return &labels_[i];

src/app/gui/style.cc

@@ -12,7 +12,7 @@ void BeginWindowWithDisplaySettings(const char* id, bool* active,
                                     ImGuiWindowFlags flags) {
   ImGuiStyle* ref = &ImGui::GetStyle();
   static float childBgOpacity = 0.75f;
-  auto color = ImVec4(0.f, 0.f, 0.f, childBgOpacity);
+  auto color = ref->Colors[ImGuiCol_WindowBg];
 
   ImGui::PushStyleColor(ImGuiCol_WindowBg, color);
   ImGui::PushStyleColor(ImGuiCol_ChildBg, color);