EBay has a great selection of tubes.
I found these and want to try them.
White/Clear Blue with Silver flake...
https://www.ebay.com/itm/40-pk-1-5-W...gAAOSwT5tWHA65
https://www.ebay.com/itm/100-pk-1-5-...4AAOSwI-BWHA5f
I don't know if fish will eat them but something just attracted me to them.