The colours are a total coincidence, at least from my end you'd need to ask Nathan if he was secretly thinking of Shego. The original model was mostly Red & Blue with Gold trim and a tiny little triangle of the green/black energy on the chest. When I was feminizing the model, I realised that the F.I.R.E. Scientists would have made the armour, but Valence had made the energy inside it. So I wanted to make the energy, the part that was truly "Valence", a much bigger component of the updated design. Shaking off the armor (& gender expectations) that were put there by others to show what is actually there.

As for the way the energy is drawn, that's more of a shared ancestor, Jack Kirby famously used black spots in brightly coloured shapes to represent various forms of non-standard energy. And often just because it looked cool as hell.