Yes. Your tattooist can colour it over with white ink, more or less depending on how much lighter you want it. … You can also use the same technique to cover black tattoos up with colour. Grey them out first, then go over with colour when they have healed up.
Moreover, how can I lighten my tattoo?
Regarding this, will my dark tattoo fade?
That super dark, saturated look of a fresh tattoo will fade no matter what the color. Technically the ink doesn’t fade. When the tattoo is fresh it’s basically an open wound, so you can see all the ink clearly. During healing you will form new skin over the actual tattoo causing the ink to appear a few shades lighter.