performance question: Mobile/VertexLit vs Standard

I'm making a lowpoly mobile game where assets just have solid colors (a few materials with different colors for a model)

Which would be faster (for forward rendering)?
Mobile/VertexLit (Only Directional Lights) with 4x4px plain color texture
or
Standard shader with only color setup

from Unity Documentation: Vertex-Lit shaders in Forward rendering path are always cheaper than Pixel-Lit shaders
but there is overhead of texture switched for each material

 

I wish you saw a fully compiled standard shader.
If it is all the same to you, from the looks perspective, any mobile shader is cheaper than the standard