Adding to table of contents messes up format

[Lebber]

I created and automated table of contents in Word 2010. All the text has teh following format

Times
1.5 line spacing
Black letters
No space after a line



Once I add something to the table via Reference/Add text, it changes to:

Times
1.15 line spacing
Grey letters
10 pt after a line.

This forces me to format every bit of text I add to the table of contents. Why does Word do that? I never asked for any reformatting!