Orange wines are actually white wines, but their colour has a light orange hue because the wine making process is the same as making a red wine.
The difference in the wine making between a white and a red is the contact of the wine with the grape skin. The colour is extracted from the skin, the grape juice is always a light-yellow colour, whether its from a red or white grape. When making a white, you remove that skin as soon as the juice (must) is extracted. However, if we are making an orange wine, you leave the skins in the must. No matter how long it is left it will never reach the colour of a red wine as you are working with white grape skins, and their ability to provide colour is minimal. However, the colour of the white wine will evolve and amber tones will be generated, becoming an ‘orange wine’.