Adding a tint swatch of a color if the tint is being used? [JS][CS5]

Question

Hey there, I'm totally new to this scripting stuff and I've already pieced together a few scripts and much to my surprise it seems to be working!
There is one thing I cannot find out how to do, though.  I think it would be possible.  Anyways, I'm looking for a script that will add a tint swatch of a color if the tint is being used.  So, say I have color1 in my swatches that is being used in the document and also in the document a 25% tint of color1 is being used.  I need the 25% tint to be made into a swatch as well.
Is there a simple way to have a script "read" the document for unused tints and add them as a swatch?
This is what I have pieced together for my script so far.  It is basically all from these two threads.
http://forums.adobe.com/message/1106498
http://forums.adobe.com/message/4115524
//  Delete unused Character and Paragraph Styles
var myDoc = app.activeDocument;
var myParStyles = myDoc.paragraphStyles;
var myCharStyles = myDoc.characterStyles;
for (j = myParStyles.length-1; j >= 2; j-- ) {
   removeUnusedParaStyle(myParStyles[j]);
for (i = myCharStyles.length-1; i >= 1; i-- ) {
   removeUnusedCharStyle(myCharStyles[i]);
function removeUnusedParaStyle(myPaStyle) {
   app.findTextPreferences = NothingEnum.nothing;
   app.changeTextPreferences = NothingEnum.nothing;
   app.findTextPreferences.appliedParagraphStyle = myPaStyle;
   var myFoundStyles = myDoc.findText();
      if (myFoundStyles == 0) {
         myPaStyle.remove();
   app.findTextPreferences = NothingEnum.nothing;
   app.changeTextPreferences = NothingEnum.nothing;
function removeUnusedCharStyle(myChStyle) {
   app.findTextPreferences = NothingEnum.nothing;
   app.changeTextPreferences = NothingEnum.nothing;
   app.findTextPreferences.appliedCharacterStyle = myChStyle;
   var myFoundStyles = myDoc.findText();
      if (myFoundStyles == 0) {
         myChStyle.remove();
   app.findTextPreferences = NothingEnum.nothing;
   app.changeTextPreferences = NothingEnum.nothing;
// Delete unused Tags
app.activeDocument.deleteUnusedTags();
// Delete unused Swatches and Add Unnamed Colors
app.menuActions.item("$ID/Add All Unnamed Colors").invoke();
var myIndesignDoc = app.activeDocument;
var myUnusedSwatches = myIndesignDoc.unusedSwatches;
for (var s = myUnusedSwatches.length-1; s >= 0; s--) {
     var mySwatch = myIndesignDoc.unusedSwatches[s];
     var name = mySwatch.name;
// alert (name);
  if (name != ""){
mySwatch.remove();
Thanks in advance for any responses.  I hope I can get this working so I have one less step to do while revising old documents!

Answer 1

Rich Black has a nice pop for some things. In inkjet printing that doesn't reseperate blacks into a CMYK build on their own I generally like to set blacks as rich when printing to any substrate that isn't paper to reduced appearance of banding which most inkjets produce.
Apparently adding only a bit of cyan isn't uncommon, though I generally have been accustomed to using a full CMYK black to build mine. Some use a 50-50-50-100 build, but I generally do a 50-40-40-100 to keep ink density a bit lower and it creates the same effect.
I think you don't want to generally go over 280% ink density on much coverage when printing digitally on toner based copiers and digital presses, as the fusers can't get that much ink to adhere on coated stocks without a bit of flaking. Toner is supposedly a bit richer than printer inks, but I think largely the reason is inability for fusers to get hot enough to fuse without affecting the stock with either page curl or flat out charring coated stocks.
If you are sending something out to a printer you have no control over (i.e. can't fire them in the case of a magazine or trade pub) and they have poor registration it is best to just give them straight black, as out of register rich black looks powerful bad.