* Hydrogen peroxide is not an acid or a base. It's a neutral compound.
* Litmus paper is used to test for acidity or alkalinity. Red litmus paper turns blue in the presence of a base, and blue litmus paper turns red in the presence of an acid.
* Since hydrogen peroxide is neutral, it won't change the color of litmus paper.
In short, hydrogen peroxide will not have any effect on the color of litmus paper.
