Action to change specific colors

Question

I'm trying to create an action to change two specific colors in ~300 different logo files (.ai and .eps). I'm coming from Photoshop so I assume there is a way to create a droplet from an Illustrator Action but that's a different topic.
The colors are Pantone 143 and 287 which need to be changed to 143 U and 287 U, respectively.
Here are the steps that I think I need to record for my action:
Unlock all layers
Add new colors to swatch board
Select all layers
Recolor Artwork... (Edit -> Edit Colors -> Recolor Artwork... This step is not recorded?)
Save file
The problem is that the Recolor Artwork step is not recorded. Can anyone explain what I should be doing to create this action properly?

Answer 1

JavaScript is the answer. I found this somewhere A while back. This script changes Pantone 133 to 101. It can be edited to apply to any other Spot colors.
This script requires both the old color and the new color exist in your swatches pallette before you run it.
#target illustrator
var docRef = app.activeDocument;
with (docRef) {
          var replaceColor = swatches.getByName('PANTONE 101 C').color;
          for (var i = 0; i < pathItems.length; i++) {
          with (pathItems[i]) {
                    if (filled == true && fillColor instanceof SpotColor) {
                              if (fillColor.spot.name == 'PANTONE 133 C') fillColor = replaceColor;
                    if (stroked == true && strokeColor instanceof SpotColor) {
                              if (strokeColor.spot.name == 'PANTONE 133 C') strokeColor = replaceColor;
          for (var j = 0; j < stories.length; j++) {
                    with (stories[j]) {
                              for (var k = 0; k < characters.length; k++) {
                                        with (characters[k].characterAttributes) {
                                                  if (fillColor instanceof SpotColor) {
                                                            if (fillColor.spot.name == 'PANTONE 133 C') fillColor = replaceColor;
                                                  if (strokeColor instanceof SpotColor) {
                                                            if (strokeColor.spot.name == 'PANTONE 133 C') strokeColor = replaceColor;
More answers can be found here, such as how to make it unlock everything.
http://forums.adobe.com/community/illustrator/illustrator_scripting?view=discussions