I've received parts for the BlackPill prototype version and to be completely honest they are tiny, perhaps too tiny. 

The diodes will be difficult enough being there are 99 of them and no stencil, but I'm not at all confident I can solder the current RGB LEDs even with the stencil supplied, they are simply too small for comfort and my eye sight is not good.

I will give it a go but may have to update the RDG leds from WS2812B to SK6812-E  as they mount on the back side (allowing one stencil for everything), and they are easier to hand solder.