28 September 2018 Update:
- Resolved many cosmetic issues, download latest zip file from below
Download and INSTALL this font family https://www.fontsquirrel.com/fonts/lato
Go to Application and right click on Slack > Show Package Content Contents > Resources > app.asar.unpacked > src > static > ssb-interop.js
Replace your CURRENT ssb-interop.js File
https://foxshift.com/slack-lato-font/ssb-interop.js.zip OR View file on GitHub
Restart Slack & ENJOY !!! 🙌🏻
Updating Slack will not cause this theme to reset! 🦁
Add the following code to the end of the CSS section on your ssb-interop.js file:
.p-channel_sidebar__channel--unread:not(.p-channel_sidebar__channel--muted):not(.p-channel_sidebar__channel--selected) .p-channel_sidebar__name, .p-channel_sidebar__link--unread .p-channel_sidebar__name, .p-channel_sidebar__link--invites:not(.p-channel_sidebar__link--dim) .p-channel_sidebar__name{
border-left: 2px solid #ff5656;
padding-left: 6px;
height: 20px;
overflow: hidden;
line-height: 16px;
font-size: 17px;
}
PS this is my own customization of original theme