Edit 4-3-13: A few more notes about these earrings that I hope will be helpful to people considering them:
-I never found an environment that made them look anything but yellow.
-I got quite a few compliments on them.
-They are comfortable enough to sleep in and the metal doesn't irritate my sensitive ears.
-They are easy to clean and keep shiny.
-If the light hits them right, they make a bunch of tiny rainbows, or sometimes just white spots of light.
-If you are looking for almost the exact same earrings with purple and blue instead of yellow and orange, try these:&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Vitrial-Light-Purple-Genuine-Swarovski-Crystals-Sterling-Silver-Leverback-1-5-Dangle-Earrings/dp/B005KYIMR4/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Vitrial Light Purple Genuine Swarovski Crystals Sterling Silver Leverback 1.5'' Dangle Earrings</a>&nbsp;I just got them a few days ago. The crystals seem to be exactly the same size and shape, and the metal part is almost exactly the same shape, with a slightly thicker part attaching the crystal to the earring that I think I like more.
-I was pleased with the yellow earrings despite not expecting the color, and I am even more pleased with the purple and blue ones.

Original review:
I read reviews that said that these earrings changed color depending on your outfit and the lighting you're in, but they always seem to be the same color to me. I've looked at them in fluorescent light, incandescent light, and sunlight, and they are always yellow or golden with an orange-ish heart. A couple times in the sunlight (I kept asking my boyfriend, and I'm sure he was getting tired of it by the end of the day, haha) they had some green around the edges.

The exceptions I noticed to them being yellow are if they are lit from behind, or set on a white surface and viewed from above. Then, the blue shines through. Also, when they are viewed more edge-on, they seem to be clear.

They have a translucent, metallic coating on the back that looks iridescent (shiny, not matte as other reviews have said) and I suppose makes the earrings reflect more light and be more colorful. They do sparkle quite a bit, and I like them, but they are not quite what I was expecting. They are also very lightweight and comfortable to wear. I have some sensitivity to metals and was not irritated by them.

They are interesting earrings, and I intend to wear them more to see if I can find a combination of clothing and lighting to make them a color other than yellow, but I'm not holding my breath.