I have 11 files with over 140 slides each, and none of the shapes are tied to a theme/master. My goal was the change the master font and also replace all the red text (there is SO much red text) with black text.

I successfully updated the master font (thanks to https://gist.github.com/dsottimano/20a50daded2128b4c86acb430cecba67), but have come up short in trying to write something for ForegoundColor.

I tried to adapt this code and cannot make it work: https://mashe.hawksey.info/2017/10/changing-the-color-of-all-links-in-google-slides-with-google-apps-script/

I need to replace all text formatted with foregroundcolor hex #e04935 with hex #000000.

Appreciate any tips on making this work!

Here is what I have done so far:

//original from: https://mashe.hawksey.info/2017/10/changing-the-color-of-all-links-in-google-slides-with-google-apps-script/
/**
 * @OnlyCurrentDoc
 */
 
function changeTextColorforShapes(){
  var deck = SlidesApp.getActivePresentation();
  var slides = deck.getSlides();
  slides.forEach(function(slide) {
    // https://developers.google.com/apps-script/reference/slides/slide#getPageElements()
    var elements = slide.getPageElements();
    elements.forEach(function(element){
      // https://developers.google.com/apps-script/reference/slides/page-element#getPageElementType()
      var type = element.getPageElementType();
      // Text boxes are 'SHAPES' (this code doesn't handle table cells)
      if (type == "SHAPE"){
        // https://developers.google.com/apps-script/reference/slides/text-range#getTextStyle()
        var textStyle = element.asShape().getText().getForegroundColor();
        // https://developers.google.com/apps-script/reference/slides/text-style#hasLink()
        // Returns true if text is color #e04935 (https://www.color-hex.com/color/e04935) and changes text to color #ffffff (black)
        if (ForegroundColor('#e04935')
          textStyle.setForegroundColor('#ffffff');
      }
    });
  });
}