3D Model Color CHanger

Hello Guyz i am new to blender and its is an awesome software to make 3d model and display it in website using blend4web i have problem i want tp add color changer like this here is the link link

can anyone plz tell me how can i apply this to my model that is attached
plz tell step by step i am new to blender
thanks in advance

Hi, you can do it in 2 ways:
Inherit material (substitutes the color of the object for that of another)
Changing the color (You change the color directly)

Inherit Material
link

Animating the color

link

Ty bro u are awesome i have learn from your video that how to apply 3 or more different colour on same model but can u plz tell me how can i add dimension view b/c i want to add dimension in my model like this as u seen in image and i want to add these circle red,green etc logo to change colour of my model i have also attach my model plz check my model and tell me how can i apply these things sry my english is weak

I do not understand you well, what you want is to associate the color to specific dimensions?

Plz tell me the procedure of applying dimesion like as shown below link and how to make button to change the color of the model same as shown in the link at the left bottom

I'm sorry but it's very difficult for me to explain that to you, I think you should see tutorials to learn how to do it, how to use the b4w nodes and at the same time work with Blender. What you want to do requires several actions in Blender and in b4w. If you speak English there are several tutorials from ianscott888 for Blender and for B4W on youtube.