phat_line.py

        node_tree = bpy.data.materials['Screen'].node_tree   
        
        k_color_00 = node_tree.nodes["k_color_00"]
        k_color_01 = node_tree.nodes["k_color_01"]
        k_color_02 = node_tree.nodes["k_color_02"]
        k_color_03 = node_tree.nodes["k_color_03"]
        k_color_04 = node_tree.nodes["k_color_04"]
        k_color_05 = node_tree.nodes["k_color_05"]
        k_color_06 = node_tree.nodes["k_color_06"]
        k_color_07 = node_tree.nodes["k_color_07"]
        k_color_08 = node_tree.nodes["k_color_08"]
        k_color_09 = node_tree.nodes["k_color_09"]
        k_color_10 = node_tree.nodes["k_color_10"]
        k_color_11 = node_tree.nodes["k_color_11"]
        k_color_12 = node_tree.nodes["k_color_12"]
        k_color_13 = node_tree.nodes["k_color_13"]
        k_color_14 = node_tree.nodes["k_color_14"]
        k_color_15 = node_tree.nodes["k_color_15"]
        
        if self.icon_factor == 0:
            k_color_00.inputs[0].default_value = 0
            k_color_01.inputs[0].default_value = 0
            k_color_02.inputs[0].default_value = 0
            k_color_03.inputs[0].default_value = 0
            k_color_04.inputs[0].default_value = 0
            k_color_05.inputs[0].default_value = 0
            k_color_06.inputs[0].default_value = 0
            k_color_07.inputs[0].default_value = 0
            k_color_08.inputs[0].default_value = 0
            k_color_09.inputs[0].default_value = 0
            k_color_10.inputs[0].default_value = 0
            k_color_11.inputs[0].default_value = 0
            k_color_12.inputs[0].default_value = 0
            k_color_13.inputs[0].default_value = 0
            k_color_14.inputs[0].default_value = 0
            k_color_15.inputs[0].default_value = 0
        elif self.icon_factor == 1:
            k_color_00.inputs[0].default_value = 1
            k_color_01.inputs[0].default_value = 0
            k_color_02.inputs[0].default_value = 0
            k_color_03.inputs[0].default_value = 0
            k_color_04.inputs[0].default_value = 0
            k_color_05.inputs[0].default_value = 0
            k_color_06.inputs[0].default_value = 0
            k_color_07.inputs[0].default_value = 0
            k_color_08.inputs[0].default_value = 0
            k_color_09.inputs[0].default_value = 0
            k_color_10.inputs[0].default_value = 0
            k_color_11.inputs[0].default_value = 0
            k_color_12.inputs[0].default_value = 0
            k_color_13.inputs[0].default_value = 0
            k_color_14.inputs[0].default_value = 0
            k_color_15.inputs[0].default_value = 0
        elif self.icon_factor == 2:
            k_color_00.inputs[0].default_value = 0
            k_color_01.inputs[0].default_value = 0
            k_color_02.inputs[0].default_value = 0
            k_color_03.inputs[0].default_value = 0
            k_color_04.inputs[0].default_value = 0
            k_color_05.inputs[0].default_value = 0
            k_color_06.inputs[0].default_value = 0
            k_color_07.inputs[0].default_value = 0
            k_color_08.inputs[0].default_value = 1
            k_color_09.inputs[0].default_value = 0
            k_color_10.inputs[0].default_value = 0
            k_color_11.inputs[0].default_value = 0
            k_color_12.inputs[0].default_value = 0
            k_color_13.inputs[0].default_value = 0
            k_color_14.inputs[0].default_value = 0
            k_color_15.inputs[0].default_value = 0

thin_line.py

        nodes = node_tree.nodes
        node_array = [nodes["k_color_{0:02d}".format(n)] for n in range(16)]
        
        def set_nodes(switches):
            for i, val in enumerate(switches):
                node_array[index].inputs[0].default_value = val
        
        if self.icon_factor == 0:
            set_nodes([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0])

        if self.icon_factor == 1:
            set_nodes([1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0])

        if self.icon_factor == 2:
            set_nodes([0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0])