Brand new yellowing "Twinkle"

[greenpassion]

I just recieved a mini onciduim, "Twinkle" that I ordered on line. It came with many many buds, and a few were opened as well. But, this little guy came to me in what I would consider poorly packaged, as it was cold, and may have been outside my garage for several hours. (I live in Vermont) There was no heat pack. Still and all, the plant looked ok, but maybe a little lighter green than I thought it should be. Now, it's continuing to bloom, but it'd definatly yellowing. I have it with my other orchids on an humidity tray, under LED grow lights, with good air circulation and warmth. I keep my house at around 60 in the winter, with a 55% humidity level as consistantly as I can. Did this little onc. get too cold? Did I over water it? I have watered it twice so far. I've had it about 10 days now....