Hello~Well, it could be due to food, are you eating lots of yellow veggies like carrots? Orange/yellow tint: Ginger-hued hands are no cause for concern—in fact, they're a sign you have a diet rich in veggies full of the pigment carotene, like carrots, sweet potatoes and winter squash.
Infrequently, carotenemia (the name that is given to this condition) is caused by a medical condition. According to a March 2003 review in “International Journal of Dermatology,” conditions including diabetes, high blood fats, hypothyroidism, liver disease and kidney disease uncommonly cause carotenemia. This secondary carotenemia is believed to be caused by faulty metabolism. For example, significantly increased blood fats can bind the carotenoids and prevent normal excretion via sweat, urine and stool. Also liver enzymes and the thyroid hormone are responsible for conversion of carotenoids to vitamin A, so liver disease and hypothyroidism can lead to excess carotenoids in the tissues. Seeing a doctor to manage these conditions can help improve the associated skin discoloration.
If you are concerned and you are not eating a lot of yellow or orange veggies, then possibly seeing your physician might help, at least then you can ask for some blood work to rule out diabetes or other medical conditions that might cause this.