Phil, Older color and round leaves are not right for Y. Excurrens, older leaves have a pink edge. Really looks like Rocio X Y. Excurrens. I wanted a few more Y. Excurrens for a colder area of my garden and Y.Excurrens would fit the bill. If it is Y.E I will go get more. Last pic of it with my Y.E. in back.
Has anyone seen the Croton being called Rocio Amarillo? It was listed last year as offshore cuttings for the wholesale growers. A little search of the Apopka, Fl growers list Rocio Amarillo as well as Rocio.