How to replace a letter to random letter with different color?

[cikanoz87]

Hello,

Is there any way in MS Office Word 2007, to replace a letter to random letter with different color automatically? For example:

change "a" to random letter.
"Mama gave me an apple" to
"Mdme gsve me tn rpple"



As far as I know, I can use Replace All, and Format -> Font -> Color (in Ctrl+H), but no random letter selection to be replaced.

Thanks in advance.