chain.input:connect_signal(signal_num)
local color = input_neutral_color[signal_num + 1]
chain.wb_effect:set_vec3("neutral_color", color[1], color[2], color[3])
chain.input:connect_signal(signal_num)
local color = input_neutral_color[signal_num + 1]
chain.wb_effect:set_vec3("neutral_color", color[1], color[2], color[3])