Need some help with colour selection

[Brother Tridon]

Hi guys

 

The marines im using are gonna be painted up in an imperial cacstellans style which i had a few years back b4 i took a 4 year break almost ;) (http://wh40k.lexicanum.com/wiki/Imperial_Castellans for referance), any suggestions on what colour i should use On capes and loinclothes on my minis, I only ask becasue i have not had any in my army until this point. Instead of the Golden eagle on chest i will be doing red, and on the helms of sgts. This means that Blue, Bone/white and red are out of action

 

Any advice would be great

 

Dave