Hi,
Apparently you can configure xrdp to support 32 bits.
Eg. see this quote:
The following line (in xrdp.ini) is responsible for the color depth of the session:
xserverbpp=?
where ? is 15, 16, 24 or 32.
from page: XRDP Devel - [Xrdp-devel] Does not Xrdp support 32bit color depth?
--
Wil