I don't have what you are looking for but I am interested in your yellow cestrum.

Let me see if I have anything you need:

yellow and orange and pink plume flowers (rooted cuttings)

pink pride of barbados (seedling)

white/red or purple/red bleeding heart vine (clerodendrum)

bridal veil clerodendrum

clerodendrum musical notes.

Also, in looking for the cestrum I ran across a fellow on Dave's Garden who says he has both red and orange so you migh try him! His page is link below.

Here is a link that might be useful: Person with the plant you want

Hi Cocomo,
I just got this...I think it's actually Cestrum Elegans Smithii. It's still small but it looks like it's taking off so it shouldn't be too long before I can take a cutting.

I know I'm horning in, but wanna run faster, please, please let me know when you have Smithii cuttings--I really want this one and have lots to trade!