Various breeding, most of them are a cross of an orange cultivar x yellow cultivar. You will have to flower them to see the results, most likely they will all be bright florescent orange like the photo.
Habenaria culture is easy, but you have to follow the rules. Generally, they like an airy media such as loosely packed sphagnum moss. When you receive the plants they will be in full growth, and begin budding in the next few weeks. Flowers will last 2-3 weeks and then the tips of the leaves will begin to discolor and dry out. Eventually the plant will completely die back to a single tuberous root beneath the soil line. After the plant has done this, it is now dormant. Keep plants dry but in a humid area, until they start to produce new growth in the spring. Wait until you start to see tiny new roots emerging from the plants and you can begin watering. There is much less guess work with these than with growing Catasetums. In general, the rule is: If you see vegetation, water the plant. If you dont see any, it should be dry. Smaller size is single growth; larger size is 2-3 growths per pot.