see RevisionOptions.MovedFromTextColor | Aspose.Words for .NET
The example shows
revisionOptions.MovedFromTextColor = RevisionColor.Yellow;
revisionOptions.MovedFromTextEffect = RevisionTextEffect.DoubleStrikeThrough;
revisionOptions.MovedToTextColor = RevisionColor.ClassicBlue;
revisionOptions.MovedFromTextEffect = RevisionTextEffect.DoubleUnderline;
But I believe the last line should be not FROM but TO thus:
revisionOptions.MovedTOTextEffect = RevisionTextEffect.DoubleUnderline;