create a modern sleek gym interior with deep green ceiling giving a calm and motivational atmosphere incorporate a fitness logo on the wall in a light green hue use dark gray for gym equipment including a treadmill and a weight rack include a wooden counter in a walnut brown add hanging spherical linen warm lights along the right side of the gym emitting a warm soft glow integrate a motivational phrase in subtle neon green lettering on the wall the space should feel energizing yet serene perfect for focused workouts