White material, which is affected by colored light

Hello everyone,

so I've been struggling with this for several days.

I already tried different materials, ambient light settings and writing my own shader. However I never got exactly the result I wanted.

This is the closest I got

However I am not quite satisfied with it.

I am achieving this affect by using a standard material with a white texture, setting the ambient light to the color black and using an image effect shader to turn black color into white.

So my question is, what is the best way to implement this effect?

Thank you all for your help.