Feature Request: add Piece set where all pieces look the same ("semi blindfold chess")

Would it be possible to add a piece set, where all pieces look the same? The purpose would be to play "semi-blindfold" chess with it.

I thought it was quite useful on this site for example: http://noirchess.azurewebsites.net/blindfoldtrainer/
That site features "colored tokens" as well as "non-colored tokens" as increasing difficulty.

hi it as been discuted a lot of time, i will make a tutorial explaining how you can do that