changing individual properties in figured bass

[liang seng]

Hi, I'm using the Lilypond 2.7.27 for Windows 98. I would like to know if we 
can tweak individual objects in figured bass without affecting the entire 
object or group? For example, can we make an accidental attached to a 
figured bass transparent without affecting the main figured bass number? Or 
moving the position of only one figured bass extender line without affecting 
the other in the context of a double extender line?
Thanks.