//Now:
#declare BunchOfSpheres = union
{
	#declare I=0;
	#while(I<10)
		sphere {
			<I, 0, 0>, 0.5
		}
		#declare I=I+1;
	#end
	pigment {
		color Red
	}
}

//Java(Script)-like syntax:
bunchOfSpheres = new Union();
for(i=0; i<10; i++) {
	sphere = new Sphere();
	sphere.setCenter(i, 0, 0); //OK, this is quite Java-ish
	sphere.setRadius(0.5);
	bunchOfSpheres.add(sphere);
}

tx = new Pigment();
tx.setColor(Red);
bunchOfSpheres.setTexture(tx);

//Maybe using the constructor instead, and a native syntax for vectors like
//POV-Ray currently has:
	sphere = new Sphere(<i, 0, 0>, 0.5);

//And how about some hybrid syntax, for initializing for example?
bunchOfSpheres.setTexture(pigment {
	color Red
});