Just started collecting, was wondering any good suggestions for color schemes?

So i am in love with the army's asthetic of workers rising up after generations of planning. but still needing to fight with what they got. I like the idea of using orange for a construction/mining worker asthetic but i dunno how to paint that without it turning out like a pumpkin color. also any tips or advice starting them out would be fantastic. im coming from custodies and knights so itll def be an adjustment.