There are 4 colour LED net lights under the arches. 3 nets to each of the two arches joined end to end and gathered at the centre. I have control on each colour and so can do both colour effects and chases. They are connected ias a mirror and use just 4 channels. Works very well and has evoked a lot of comment. My better half wants me to do similar in the other arches next year, but I have not seen any suitable nets this year so will have to do something using strings.