Waders

One dark blue or light blue or lilac ring and one metal ring (on right or
left leg) and a combination of two colour rings (on the other leg).

note 1: used colours are red, orange, yellow, white, black, dark blue, light blue, dark green, light green and lilac.
note 2 : the dark green ring is very dark-coloured and may be confused with black in some lights.
note 3 : the metal ring is always below the tarsal joint and the colour-ring is either above the metal ring, below the metal ring or above the tarsal joint.