The artist Patrick Scott was working for Michael Scott(no relation ) the architect of Scott Tallon Walker Architects, Michael Scott designed many Irish buildings including Busaras , Patrick Scott did all of the mosaics in that building . He was also later given the task of designing a new livery for CIE, part of the brief was to bring some uniformity and a streamlined look to the rolling stock which was all different shapes and sizes, so by using lines running the length of the train that gave a streamlined look white at the top black in the centre and brown /burnt clay at the bottom and yes part of the inspiration was his cat 'Miss Mouse' and her calico colouring of orange, black and white.