//a texture for the bush
#declare frac = 0.07    
#declare frac1= frac+0.001
#declare fall1 =
  texture {
    pigment {
      radial
      color_map {
        [ 0.00       color Clear ] [ 0.4         color Clear ]
        [ 0.5        color YGreen] [ 0.55        color Green ]
        [ 0.6        color Yellow]
        [ 0.65  color Clear ] [ 1.00        color Clear ]}
      turbulence 1  octaves 6  omega 8 }
 }
 
 #declare fall2 =
  texture {
    pigment {
      radial
      color_map {
        [ 0.00       color Clear ]    [ 0.45   color Green ]
        [ 0.5   color DarkGreen] [ 0.55   color LGreen ]
        [ 0.6  color Green ] [ 0.6  color Clear ]   [ 1.00        color Clear ]}
      turbulence 1  octaves 6  omega 8 }
 }
 

#declare bush1 =
union{
object{sphere { <0,0,0> 1 } texture {fall1 }}
object{sphere { <0,0,0> .7 }texture {fall2 }}
}      

#declare bush2 =
union{
object{sphere { <0,0,0> 1 } texture {fall2 }}
object{sphere { <0,0,0> .7 }texture {fall1 }}
}