I think the antlers, teak coloured wood and grey tweed give masculinity here and balances out the duck egg blue. Also, I think monochrome textiles and industrial style lighting works. I'd go bolder with the accessories than what they have here tho!
Semi pendant lamp by Gubi has become famous for its arc shaped enamelled metal with the shape based on two quarters of a circle. The unique shape of the lamp and the crown silver light bulb give a unique spread of the light around the room.