1024 procedurally generated tubes with 3 parts; top, normal, and dodad.  Uses db32 palette.    Note: the color #201620 should be used as a clear/mask color.

I intended these to go with my "Techno Bricks", but I feel there's a bit too much contrast/black in them.  They may go better with my "Shiny Noise Bricks".  Also, if you need bottom pieces, just invert the tops.