1. Install Nifskope
https://github.com/niftools/nifskope/releases

2. File --> Open: nif files (open and edit one by one!) in this location with Nifskope:
Steam\steamapps\common\Skyrim Special Edition\Data\CalienteTools\BodySlide\ShapeData\DVK Cuirass [Color you want to edit]
Steam\steamapps\common\Skyrim Special Edition\Data\CalienteTools\BodySlide\ShapeData\DVK Boots [Color you want to edit]
Steam\steamapps\common\Skyrim Special Edition\Data\CalienteTools\BodySlide\ShapeData\DVK Pauldrons [Color you want to edit]

3. First open the Cuirass nif. Expand 0 NiNode by clicking the arrow.

4. Scroll down until you see BSTriShape with any names containing "eye" and expand the arrow. There are 3 eyes for cuirass that you need to edit.

5. Click on BSLightingShaderProperties. Look for Emissive Color in Block Details.
https://imgur.com/a/UKfUY
The default color for red is c60011 (for Copper and Obsidian), blue is 0900c6 (for Steel Blue), orange is c63000 (for Steel)

6. Double click on the color wheel, click yes, and change the color you want.

7. Save.

8. Repeat the process for Boots and Pauldrons.