Few issues in the Zygote Home Page documentation

[achiverram28]

The current issues listed here are referring to that in
https://fluxml.ai/Zygote.jl/dev/#
https://github.com/FluxML/Zygote.jl/blob/master/docs/src/index.md

• First one being the link -> https://fluxml.ai/blog/2019/02/07/what-is-differentiable-programming.html , which is linked to "differentiable programming" is broken
• Secondly coming to the colordiff example in the same page , when run on my system gives the output as
  , while the example tends to give the grad output
• Thirdly , in the last section of the page , the Implicit Parameters which uses Params , there has been a slight error in the flow of the example.
  
  Here the x is a 2×3 Matrix{Int64} , whereas the W defined later is a 2×5 Matrix{Float64} , so the mismatch lies in the shape , I guess we can introduce x=rand(5), which would take care of the flow

[filchristou]

Secondly coming to the colordiff example in the same page , when run on my system gives the output as (nothing, nothing)

How would you fix that? Probably something must have changed in the Colors.colordiff implementation such that the derivative is not defined ?