Title: Pure Fun 225 bytes
#macro C(c,d) //pigment and  color map  macro
 crackle color_map{[0 rgb.3*c][.5 rgb 1-d]}
#end

plane{z,4 
 pigment{cells 
   pigment_map{[0 C(z,x)][.3 C(y,x)][.8 C(x,y)][1 C(y,z)]}
   turbulence<15,50,20>// very big turbulence  
   scale 4 
   warp{repeat-x flip x}}// acts as a mirrow
 finish{ambient 1}//chang ambient to -1 to see whats reflected 
 translate<9,7,0>} //moves the whole plane to
                   //adjust whats refelected
                   //the z value has to be >-4