ftp.nice.ch/pub/next/games/action/Tetris1.3.N.bs.tar.gz#/Tetris1.3/Source/ColorBlocks

ColorBlock1.tiff
 

ColorBlock2.tiff
 

ColorBlock3.tiff
 

ColorBlock4.tiff
 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.