code: @JsonIgnore
  	public JSONArray getAccumulatorsColorsDataJSON() {
  		final JSONArray jsonArray = new JSONArray();
  		if (singleGraphAOs == null || singleGraphAOs.isEmpty())
  			return jsonArray;
  
  		for (AccumulatedSingleGraphAO graphAO : singleGraphAOs) {
  			if (StringUtils.isEmpty(graphAO.getName()) || StringUtils.isEmpty(graphAO.getColor()))
  				continue;
  
  			final JSONObject jsonObject = graphAO.mapColorDataToJSON();
  			jsonArray.put(jsonObject);
  		}
  
  		return jsonArray;
  	}
docs: Maps collection of {@link AccumulatedSingleGraphAO} to JSON representation.
  Accumulator will be mapped only if accumulator has the preconfigured color.
  
  @return JSON array with accumulators colors