Our dyes are created based on the premise that they will dye white or light colored fabric the color of the dye. So when our Black or Graphite dye is applied to a colored fabric, the original color of the fabric may still show through. To address this, we recommend adding an additional color (per our chart here) to counteract the undertones of the existing color. As an example, if you were dyeing red fabric, we would recommend adding some green dye to your dyebath. Since mixing red and green makes black, adding a green dye to your dyebath will counteract the red on the fabric.
Over Dyeing with Black
RIT DYE All-Purpose Liquid Dye 8oz NAVY BLUE / GRANATOWY uniwersalny barwnik w płynie do tkanin i innych powierzchni - sklep Customizacja
RIT DYE All-Purpose Liquid Dye 8oz TEAL / MORSKI barwnik w płynie do tkanin
How to overdye yarn! - Shiny Happy World
Colour Removing & Tie Dye - Made By Barb - no bleach & unique designs
RIT DYEMORE Liquid Dye for Synthetics 7oz MIDNIGHT NAVY / GRANATOWY uniwersalny barwnik w płynie do tkanin syntetycznych i mieszanek - sklep Customizacja
How to Get as Dark a Color as Possible
RIT DYE All-Purpose Liquid Dye 8oz DARK GREEN / CIEMNOZIELONY uniwersalny barwnik w płynie do tkanin i innych powierzchni - sklep Customizacja
Dyeing - Wikipedia