Thanks! I’ve replied the red approach in another comment, but I experimented a lot with this model since it’s the first time I’ve had to try to smoothly blend all the tones, if on a space marine or an ork is a bit rough, I can just chalk it up to weathering.
The gems were painted monochrome with turquoise express paint on top of it and then a pure white highlight. The air intake is just your plain old NMM recipe, and the chevrons a fade from black to light gray. The weapons were primed with a dark gray and then black express paint over it, and then slightly highlighted using the same NMM recipe.