( Which leads me to believe she had Widowmaker genes in her Codex! )
That's not just your belief, they have stated it in canon. She has Widowmaker in with her Kerensky.
And I'm thinking the Widowmakers canon scheme will end up being something akin to her Black/Red color scheme, though, I'm not 100% on that, after all, I think the entire Dragoons were fluffed with that scheme in the early days & only later in canon did we see the Regiments get their own variations. But I'd like to think she came up with that particular scheme as nod to her heritage.
On tangent note, I'm not sure what is my favorite scene of hers in fiction........ Her Nicky K quote after Shooting Fadre Singh(sp), or when she called out Burk Carson(?) with some line about "come on little boy & learn why I'm called the Black Widow".