user-preferences
open /?debug
click css=div.tool-icon.gear-icon
click css=div.background-picker.lowcont-medium-picker-background
click css=div.background-picker.medium-picker-background
click css=div.background-picker.light-picker-background
click id=grid-width
select id=grid-width label=Enabled - 1px wide
click css=option[value="1"]
select id=grid-width label=Enabled - 2px wide
click css=option[value="2"]
click id=grid-width
select id=grid-width label=Enabled - 3px wide
click css=option[value="3"]
select id=grid-width label=Enabled - 4px wide
click css=option[value="4"]