de-yellow-fy the guides (#1836)
de-yellow-fy the guides (#1836)

* de-yellow-fy the guides

* Update _variables.scss

skaterdav85/guides,skaterdav85/guides,nicobot/guides,tleskin/guides,nicobot/guides,tleskin/guides,skaterdav85/guides,skaterdav85/guides,nicobot/guides,tleskin/guides