caller script:
get_tree().call_group("Blue","change_color")
blue guysscript:
func change_color():
rands()
$Sprite.modulate = (Color(num1,num2,num3))
var rng = RandomNumberGenerator.new()
var num1
var num2
var num3
func _ready():
rands()
#WE ARE IN THE Blue GROUP SCRIPT
var current_mod
func rands():
rng.randomize()
num1 = 0
num2 = 0
num3 = rng.randi_range(1, 6)
...
https://www.youtube.com/watch?v=TbMuhHM3wds