Row Highlighter for Gmail™ and Inbox™ von pb_ee1

Adds some colors to the letter rows in Gmail (including in multiple inboxes feature) and in Inbox. Also supports contacts list (https://contacts.google.com/).

Starting from version 1.1, you can customize the colors! :-)

Credits goes to stasnikiforov for the style format, and to Jhon for the idea (http://userstyles.org/styles/4725).