Painting guide for elites

So I understand you can paint the minis however you want aslong as you can colour the bases the team colours but I’m confused over the elites that come in the box are they just blue ? Also future proof wise does anyone know if there’s a chart somewhere with the team colours for blue and red ie blue is purple to blue shades. I’m sure this Is a question that gets asked a lot. I’m trying to future proof my painting.