If the crapes themselves have well shaped, uniform trunk systems, you might consider uplighting THEM. In doing that, the lit plant is featured, not the light source. To give specific advice, one would need to SEE details of the space and know the budget. If this is DIY you should experiment with a sample.

You have a golden opportunity here! Please post some pics. I hope that when you come up with a great plan you'll hold off on doing it if you don't have the $$s for it yet.