message: ColorButton: As a small convenience, provide a text baseline.
diff: @@ -9421,7 +9421,7 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
  if (size.y == 0.0f)
  size.y = default_size;
  const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
  - ItemSize(bb);
  + ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
  if (!ItemAdd(bb, id))
  return false;
  