cursor's color while it is in a entry which has a black background

[yeajchao <yeajchao yahoo com cn>]

Hello all
   I have a problem as fllow:
    there is a entry ,it's background is black
    the problem is that ,when i clicked in the entry ,
   I can not see the cursor,
   it may be because the cursor is also black
 
   In my opinion ,if I changed the cursor's color 
   I may see it 
 
   but the probem is that i didn't know how to change the
cursor's color
   Can anyone  help me ?
 
  Thanks in advance !


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