Pure Mode Costume is exactly that. An Angel in her purist form.  No clothes, No belt, No shoes, Just White Angel Wings. This mode is for Normal Missions, Arcs, Radios, Tips, Etc.  All Powers will be as pure white as possible. However, Hair will always remain its original color

Upper Body:	Tops with Skin
Chest – 	Eden, White Color
Gloves – 	Smooth/Bare, Bare Hands, No Tattoo

Lower Body:
Bottom – 	Bikini 3, White Color
Boots – 	Flat, Bare Feet, No Markings allowed

Back Detail: 	Wings
Wing – 	Angel, 1st and 2nd Colors White 

Note: People can only see what an Angel allows them to see. In order to see Angels in their Truly Purist Form; You can go to this Homecoming Forums link and read about the COH Modder.  
https://forums.homecomingservers.com/topic/49175-city-mod-installer-released/ 

From there you can download the COH Modder using this link 
https://mods.cityofheroes.dev/

The COH Modder is PURELY OPTIONAL and allows you to replace colors, sound files, music, and costume parts easily.  

For example you can add light saber sounds to Katana or Broadsword.

If you do decide to accept the Challenge, and join the SG.  A Leader can help you install some costume parts that can augment your look as an Angel, if you so desire.