On RPi v0.1.1 the desktop image shows through the HUD. See this photo for an example:
http://i.imgur.com/APXapNV.jpg
(unsure where RPi issues go, if anywhere?)
MCPE-1830
Raspberry Pi Edition - transparency on toolbar shows desktop through the HUD
Resolved
Invalid
0
(Unassigned)
Unconfirmed
Tablet - Android - Other (Specify in description)
0.6.1
Retrieved
Unfortunately Pi Edition issues aren't being tracked here for now, sorry.