Dark Sidhe Handbook

Appearence

Dark sidhes look exactly like their original, but with markings and different colors.
Eyes: Always red
Sidhe Marks: Always black
Black/white/grey: Just change the values. If a character has, let's say, black hair, their dark sidhe will have white hair. Or say their fur is light grey, the dark sidhe's fur will be dark grey.
Color values: the values of colors must be switched. Example: Dark blue ---> light purple; Light orange ---> dark green
Colors: You don't have to stick to opposite colors. Colors can be switched to any color you find appropriate, just be sure to switch the values. Also, if there are two colors on someone, then you can just swap the colors if you want. For an example, take a look at Tana And Anat. The pink and green were swapped, and the pink and blue were swapped.
Skin: If white, then black of course. (Like Leat and Tael) if regular skin color, just change the values. Light skin becomes dark skin and vice versa.(like Tana and Anat)