to change a color of material your shader must support this color as a parameter. all parameters that shader supports you can see in material properties when you choose a shader. if there's no color property, then answer no - you can not change a color such way. add color property and modify calculation inside shader source or choose another shader that supports color change.
answered Jul 20 '12 at 10:53 AM
Thank you ..
answered Jul 20 '12 at 06:46 PM