NetLogo 7.0.0-beta2:

view2.5d:set-turtle-stem-color

view2.5d:set-turtle-stem-color Title colorReporter

This command must be called from the Observer context. Updates only the turtle-view window with the specified title (if any). colorReporter is an anonymous reporter that should take a turtle as input, and report some number representing a color from it. Turtles are now drawn with “pins” or “stems” that have the specified color (instead of the grey default).

Example:

;; setup view with 2 turtles
crt 1 [ set color green  setxy 2 3]
crt 1 [ set color red  setxy 5 4]
view2.5d:turtle-view "Test" turtles [ the-turtle -> [ xcor] of the-turtle ]
view2.5d:set-observer-distance "Test" 40
view2.5d:set-z-scale "Test" 2
view2.5d:set-observer-angles "Test" 25 30

;; increase the stem thickness
view2.5d:set-turtle-stem-thickness "Test" .2

;; change the stem color to  match the turtle-color
view2.5d:set-turtle-stem-color "Test" [ the-turtle -> [ color ] of the-turtle ]

; now make the stems orange
view2.5d:set-turtle-stem-color "Test" [ orange ]

Take me to the full View2.5D Extension Dictionary