I love it too when the sun hits them just right, they just sparkle. Sometimes the Ruby Throated ones look purple depending on how the light hits.
I'm going through almost 30 pounds of sugar a week now, I've got 9 feeders and it's all I can do to keep them filled lol. When I got up this morning all but two of the feeders were empty and there were hundreds of birds flying around. I got caught with only one gallon of food made so I had to put just a little in each feeder until I could get more made and cooled. I usually keep 6 gallons in the fridge at all times but I guess I fell down on that job lol!
Wow, 36 degrees! Your Hummers will be leaving very soon I bet. I can't wait for it to get cold. I love to watch the birds and I'm very happy to see them each year but by this time each year I'm so ready for winter so the birds will leave. It's become like a job for me to keep up with feeding them.
Please do post your pictures, I'd love to see them.