Text with multiple gradients

[Stack]

I'm trying to create gradient text for a business card project, and I came across this old post from 2013. The code has been adapted and is working, however our gradient is a gold color on the left and right, white in the middle:

Our work around has been to create two rules; "Address 1 &Address 2" is one rule, ", City, State ZIP" is the other rule and the Start/End colors are reversed for each. Both are inserted and centered in a text box so it looks like the gradient transitions gold-white-gold. Obviously this doesn't look too great, the white portion won't always be centered within the text box since the Addresses and City/State/Zip will almost always have different character lengths. Is there a way to adapt the code to include a third (or more) color to the gradient?

[Stack]

Tried to update the post above with the code but it was too late. Below is the code from our template, for reference:

var FieldName= "CompleteAddress";
var End = [1,1,1,0]; 
var Start = [15,28,62,0]; 

var FieldLength = Len(Rule(FieldName));
var StepCyan = (End[0]-Start[0])/FieldLength;
var StepMagenta = (End[1]-Start[1])/FieldLength;
var StepYellow = (End[2]-Start[2])/FieldLength;
var StepBlack = (End[3]-Start[3])/FieldLength;
var myColor;
var Result = "<span>";

// Build Colors for Text

for (c = 0; c < FieldLength; c++)
{
myColor = new FusionProColor("Gradient_01_"+c, Start[0]+(StepCyan*c), Start[1]+(StepMagenta*c), Start[2]+(StepYellow*c), Start[3]+(StepBlack*c));
}

// Build resulting string

for (c = 0; c < FieldLength; c++)
{
   if (Asc(Mid(Rule(FieldName), c+1, 1)) == 32)
   {
	// Special case the space character
       Result = Result + " "; // Use " " for a breaking space
   }
   else if (Asc(Mid(Rule(FieldName), c+1, 1)) == 38)
   {
       // Special case the ampersand character
       Result = Result + "&";
   }
   else
   {
       Result = Result + '<color name="Gradient_01_'+c+'">'+Mid(Rule(FieldName), c+1, 1);
   }
}

Result = Result + "<\span>";

return Result;