Recoloring it to one specific color requires much less skill and work than being able to separate one piece of a model into two and have them animate properly while also adding the transparency where the red armor used to be and is much harder to do than a recolor while maintaining a realistic texture, which is what it would take for all of the Blood Mage's red armor to be able to team color.
Next time please save time by specifying exactly what you need, and what you can compromise on so you can save a lot of time for people who are doing free work for you.
Untested model