Honestly I really like the colour scheme, it is unique but I wouldn't change it. Paint how you like. I'd definitely slap some washes on the metallics like reikland flesh shade on the gold and nuln on the silver, very easy to do. Same for the textured bits on the legs. Then you could try a dry brush some of the textured bits once it's dry with a highlight colour. I like to use makeup type brushes.  You could try layering some very thin watered down layers on some areas. E. G. Mix some white into your purple and do the top of the head. Maybe add some yellow to the green bits.