Does extreme clipping white noise colour the audio spectrum?

I thought (and hoped!) not on the basis of this from research.net

> 
> Clipping is mathematically equivalent to the addition of impulse
>  noise, (at the point of clipping you are effectively adding a negative
>  impulse to the original waveform); consequently the effect on the
>  spectrum is similar to additive impulse noise, with a fairly uniformly
>  flat spectrum (depending on the degree of clipping). **The spectrum is
>  obviously going to be coloured if the clipping occurs with some
>  periodicity**
> 
> 
> 

Emphasis mine.