Hand2Note automatically recognize every player as fish or reg and assign corresponding color mark to the player. (It just takes the first fish color mark starting from the top of the list if player is a fish and the same for regs)
More information about Reg&Fish system: http://www.hand2note.com/Help/pages/RegVsFish/
If you want all the color marks be white at the beginning, just create two white marks (one with "is reg" option checked and another unchecked) and put them to the top of the list
