I am just wondering if u can change the colour of your guardians default plate, if so how can I do it???

How do I customize my Guardian armor, cape and trim?

You need to visit Valencia to choose your armor color, trim color and cape color.

--Solina

Visit Valenica, the rare item hunter, who stand outside the inn at battleon.

In her dialog, click <visit grumbugly>, then <customize item>

P.E.