The Learn 2016 Theme in Blackboard Learn gets more responsive and optimized for mobile experiences with each release. However, during this overhaul of Learn's user interface, many brand configurations have been restricted or aren't supported. If your institution would like change the appearance of the theme, changing the top frame colors for example, it's necessary to alter the theme's CSS--not the simplest task. This guide outlines how you can use Syntactically Awesome Style Sheets (SASS) and a SASS management app to simplify the creation and management of your custom theme package.
Also see a video tutorial of this process here: Tutorial: Simple customization of the Learn 2016 Theme using Syntactically Awesome Style Sheets