Equal portions of blue, yellow and red should result in black. Dependent on the quality of the food coloring, however, you may need to add more of one color - test your version to see what works best.
The only way you can make it gray with food coloring is if the substances you are making the volcano out of is white. You will have to add black food coloring drop by drop until you have the color gray you want. If you can't find black food coloring, mix every color you have together then drip it in. All of the colors mixed together will make black.
Yes this site has instructions.instructables.com/id/how-to-color-stuff-without-food-coloring/
hell no. looks can be decieving. Food coloring is only used to make food look more appealing.
To make a silver coloring mix equal parts of Royal Blue and Coal Black.
All colors mixed together make the color black. It is wrong.
Brown
food coloring
Consuming Oreos can make poop turn black because of the dark food coloring used in the cookies. This coloring is not fully digested and can change the color of stool as it passes through the digestive system.
All things being equal, color of food coloring will not make a difference. If the ingredients used to make the coloring are different, then there may be a slight difference. This would be a great science experiment.
Brown may be produced by combining red and green food coloring. It would be wise to make a small test batch to determine the proportion of each color.
the chlorplasts trap in the color to make it change
It is a main source of color you choose to put in the water and make it the color