Many say that single blooms remain longer, but to be honest. I have never kept a log. They all hold good form for quite some time.

This Mini-Size obesum opened fully on March 10th/16. It is still looking the same on March 22/16.

The Yellows will fade once open. Most to date do not retain the deep Yellow very long. It is not a stable color yet.

Purples and many mixed color blooms will sometimes produce slight color changes with first bloom cycle to second.

The light (filtered, direct) and humidity can also effect the shades of color.

There are many Variants/Hybrids which produce Bouquets or trusses of blooms more readily than others, but I believe it is more to do with conditions in which the trees are grown and nutrients which are available to the tree.

Rick