Welcome to Geekhack!
The Yellow Edition Ducky is great! I have the engraved TKL version with MX blacks.
The one you have listed also have engraved keycaps. You can see the engraved letters in the right light, but otherwise they appear more or less blank. The blank ones are completely blank, but the site you listed does not seem to sell the blank model.
The yellow LEDs in mine actually look a bit orange. It got worse when I swapped some of the keycaps out for black ones from one of my other Ducky Shines. With the yellow keycaps they still look yellow though.