This nice yellow flower began to open yesterday - not fully opened yet. I also photographed it next to a matured Rth. Free Spirit (cultivar name unknown) flower - which was originally fairly light yellow coloured - but now tending to orange coloured after some aging.

Above : without camera flash

Above : with flash

Rth. Dal's Emperor 'Michelle' - still opening

Above: Rth. Dal's Emperor 'Michelle' (left), with a Rth. Free Spirit (right) - similar theme

Above: Rth. Dal's Emperor 'Michelle' (left), with Rlc. Brunswick Gem 'Coral' (right) - size comparison

Above: Fully opened - the bright canary yellow is one of the appealing features. The actual flower is really quite a bright canary yellow.
DAL = David Arthur Littman