I have a series of numbers

1234
1236
1239
1240
1243
1245


now i want that a row should get inserted autometically if the series
is not in line

like
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245

More over i want that the text of the new Inserted row should be in
red color.

Is it possible.

Thanks in Advance

Regards

Akash