[texhax] Adding Color to Text Effortlessly

[Iraj Kalantari]

Experts,

Say I am co-authoring a paper with someone.
Say I get a draft of the work but I want to add revisions.

Is there a way for me to add my revisions *in the source file* and 
have the changes to appear in color in the pdf file, without adding the command of 
\color{blue}  {... changes' ...} \color{black},
so that my co-author would spot them quickly?

I know I could insert tentative remarks on the pdf file, but I would like to insert the remarks and have my co-author to simply become aware of them.  I am also hoping that I could then easily turn everything into 'black' through a general command removing the added color feature.

Thank you.

Iraj.






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