Problem Description : 

With respect to the below URL : 
http://www.netbeans.org/kb/55/blackberry.html , I have made the setup for 
Blackbery Development.I also created a project with "Hello Midlet" option 
selected. I selected a table, text box from the palette options and dropped on 
the Screen Design. When I choose to run the project with the default J2ME 
wireless emulator, I see the table. But, when I choose the custom emulator, I 
the table appears as a darkened black coloured block. 
Netbeans Version Used : 5.5
Netbeans Mobility Pack for CLDC/MIDP 5.5
Blackberry JDE 1.4

Steps to Replicate:
As per http://www.netbeans.org/kb/55/blackberry.html :
1)Add the Blackberry JDE as a custom emulator
2)Create a Blacberry project (But, with the option "Hello Midlet selected"
3)Drag the tableitem option into the screen design
3)Set the device emulator as J2ME wireless emulator and run the project the 
table appears properly
4)Set the device emulator as Customer Emulator and run the project. The table 
appears as a dark black image.

I have screenshots to explain this case. (Screen Shots numbered ONE to SIX)