If i go and inserting individual line before text (0.134 0.473 0.790 setrgbcolor) the color information, the color is change and i can able to see in PDF

Great, you're almost there! Now you just have to find the places where the font is changed.

Notice how the prelude will probably define a function that changes font, using the primitive operator setfont or selectfont. For example, the definition may look like this:

/Tf { dup /pdfFontSize exch def
      dup pdfHorizScaling mul exch matrix scale
      pdfTextMat matrix concatmatrix dup 4 0 put dup 5 0 put
      exch findfont exch makefont setfont } def
[download]

(Of course, this function in the prelude is specific to the pdftops utility, but I'm assuming here you've used that to generate the postscript file.)

Once you've found this, search for calls to this proceduce, such as this:

/F784_0 1 Tf
[download]

The F784_0 here is an identifier for the font (the actual font is assigned to it somewhere in the prelude, but pdftops generates such a short identifier because the same font will typically occur many times), and the 1 is I think a scaling modifier.

Find these lines that change the font, and change the color after that, depending on which font is used.

PS. the part you mention with /FontName /XJQTHX+NewsGothicStd def is where the font is defined, not the statement where that font is activated. It could be useful if you want to know which short identifier means which font.

Hello vinothjaguva,

A quick reference to help guide you in asking questions here in the Monastery:
• How do I post a question effectively?
• PerlMonks for the Absolute Beginner
• How (Not) To Ask A Question

Also, there's no need to post a reply two or three times. Doing this only makes it more confusing for people to respond and help you. Please preview your message, double check the thread to confirm your post has gone up and wait for a reply from one of the monks.

Good luck with your postscript problem. :)

Luis