code: public void setBackgroundColor(int color) {
          mBackgroundColor = color;
          if (mQuerySection != null && mSuggestionsList != null) {
              mQuerySection.setCardBackgroundColor(color);
              mSuggestionsList.setBackgroundColor(color);
          }
      }
docs: Sets the background color of the search
  view including the suggestions section.
  
  @param color the color to be applied to the search bar and
  the suggestion section background.