Here is the first of your II Legion, formerly known as the First Swords. Your original colors were black and blue, but I decided to incorporate your warriors into my story. Long story short, your II Legion was among the mightiest of the Legions Astartes, and then by the personal request of the Emperor himself, willingly placed themselves in self-exile for some final plan to save humanity. They changed everything about them, including their armor and name.
The First Swords are gone, lost to history. Now they are known as the Guardian Blades, for they have secretly guarded Terra and the Imperium these last ten thousand years. A hidden ally which the servants of the Imperium have never known. But fear not, brother, for your legion will return to the spotlight and regain its former honor. I have seen to it.
Anyway, new color scheme is crimson armor with light brown shoulders and helmet along with silver trim. Followed your specifications as best I could. You told me they were Byzantine/Ancient Greek in nature, so I downloaded pictures of Greek soldiers, Byzantine style and design, and incorporated it into this. BTW, this is a veteran of your legion. It was my idea that all veterans of your legion have the right arm painted all red to signify their status.
Rest assured brother, more will come. Many more.