Reconstructioniats say that they only show th colours they can prove existed.
The article suggests they obstinately do this because they know it creates a spectacle.
I think there's another explanation - if they use their own judgement to fill in the gaps (making the statues more classically beautiful) then everyone will accuse them of making it all up, even if they were to base it on fairly rigorous study of e.g. the colour pallets used in preserved Roman paintings etc.
The article suggests they obstinately do this because they know it creates a spectacle.
I think there's another explanation - if they use their own judgement to fill in the gaps (making the statues more classically beautiful) then everyone will accuse them of making it all up, even if they were to base it on fairly rigorous study of e.g. the colour pallets used in preserved Roman paintings etc.