None of that should be a problem, so wash some of the colour out of the armor, check. Outline/border, check (i have an ide for that), and a color change. What colour or even colours would you like? Do you want the blue in the forest to stay, and change the colour of the armour only, or even change both, and have a colour blend over the entire Sig? Any changes to the font, like a highlight, or shadow? Decisions decisions!