Spice

Spice is a Chrome extension that allows users to change how a web page looks primarily using voice commands.

It might be useful for designers who want to quickly mock changes of a website, users with accessibility needs, or simple for those willing to fiddle with web design properties without using code.

It supports:

formatting of size, alignment and colors for text
changing size of pictures
undoing an action
using the word "this" while pointing at an item
removing items
changing background color
instructions panel
"it" reference not always working