Hi,I figured out EASIEST way to copy Gerald Sattler's glaze tequnique. I went crazy searching on web,finally came across a Chinese website showing great simple way,you can Use Google to translate it in English.
http://suegan.blogspot.com/2015/12/chocolate-mirror-cake.html?m=1 you can Use chocolate mirror glaze of your choice, then color glaze part is below.this person's chocolate glaze worked great too,I liked the fact it didn't need to be made a day ahead.
Clear piping gel
Little water
Drop or two of wilton white Icing color(depends on how much quantity you are making)
Then add any color you want to this mixture.i just microwaved this mixture worked like a charm,exact effect like Gerald Sattler. I used hair dryer to blow.
That's it!
Water,you need to adjust to what kind design you want. Thick or thin,it will affect and create different effect.
Good luck everyone.