In English, the word orange covers the fruit and the color. Spanish is a little different. One word describes the fruit, while another word is often used to describe the color.
If you can eat it, then the word for orange in Spanish is "naranja." The phrase "Quisiera comer una naranja" translates to I would like to eat an orange.
If you are talking about the color "orange" use "anaranjado." An orange car is "auto anaranjado" in Spanish.
The word "anaranjado" is an adjective. If it is used to describe a feminine noun or a plural noun, the last "o" changes to an "a." In plurals, an "s" is added to the end of the adjective.
Sometimes, "color naranja" is used instead "anaranjado." This means "orange color." The phrase bandera de color naranja translates to orange flag.