vector2array color array

	draw_primitive(Vector2Array([Vector2(0,0),Vector2(100,300),Vector2(90,0)]),ColorArray([Color(1,1,0),Color(1,0,0),Color(1,0,0)]))


func _process(delta):
update()
func _ready():
set_process(true)

which doesnt draw anything and romullox_x kindly provided workaround:

extends Node2D
var myColorArray = ColorArray()

func _draw():
for color in [Color(1,0,0),Color(1,0,0),Color(1,0,0)]:
myColorArray.push_back(color)
draw_primitive([Vector2(0,100),Vector2(100,300),Vector2(90,0)], myColorArray)
pass

func _process(delta):
update()
func _ready():
set_process(true)