The 2014 31DS literature says it comes with LED bulbs. I have the same RV. All the ceiling lights, and the ones over the table, the front overhead bed, and the table are LED's. I would get the dealer or Jayco to replace them for free. I did find the lights over the kitchen counters, the shower, and over the bed were not LED's I replaced them myself. Thinking about hitting them up for the $$.
Below is a link to the 2014 Gray Hawk's brochure in pdf format.