Turn document swatches into colored text

There are few options (each with pros and cons):  you could do trial and error, manually changing width (+/- height) in line 3; you could switch to point type and not be bound by width; you could make width and height proportional to font size; or you could vary width according to content.  I've used a combination of the latter two below. 

var orientation = "vertical";  // or "horizontal"
var size = 10;
var w = size * 2, h = size, x = 0, y = 0;  // width, height, left and top
var doc = app.activeDocument;
var swatches = doc.swatches;
var group = doc.groupItems.add(); 
for (var i = 2; i < swatches.length; i++) { 
    var rect = doc.pathItems.rectangle(y, x, w, h);
    var text = doc.textFrames.areaText(rect);
    text.contents = swatches[i].name;
    text.textRange.size = size;
    text.textRange.fillColor = swatches[i].color;
    while (text.lines[0].characters.length < text.characters.length) {
        text.textPath.width += size;
    }
    if (orientation == "horizontal") x += text.textPath.width;
    if (orientation == "vertical") y -= h;
    text.move(group, ElementPlacement.PLACEATEND);
}