Color Updated Text

Is there a macro that can color the specific text in a cell that has been updated? Currently, I am using some conditional formatting as a temporary solution, but it colors all of the text in a cell if a change is detected.

I plan on having another macro that will color all of the text in the sheet black after I have reviewed the changes.

This proposed method is similar to the "track changes" feature in Excel, but I would like something that visually points out the specific text.

See the attached file for an example of what I would like the macro to do. Column B shows the initial text in the cells and column C shows what the text color in these cells should look like after updates are made by the user.

Any thoughts?