Amber shellac will add color to a stock, and so will alkanet root (added in the finish).
But neither will typically make a stock quite as red as some of the above examples. There are redder shades of shellac than the traditional amber of course.
See below photos of stocks showing what Amber shellac will do by way of color.
Raw
IMG_0323.jpg
Finished
IMG_0711.JPG
With just sealer coat
IMG_2732.jpg
Finished
IMG_5548.jpg