Right now we use a common pattern through settings windows in Plasma and KDE apps, where on the left side, there is a vertical list of icons with text underneath them. Each one depicts a category and switches to that category when clicked on.
These icons look great when they're colorful, but not-so-great when they're just big monochrome icons, or when there is a mix of colorful and monochrome icons. For example:
Bad: Mixture of monochrome and colorful icons
Bad: All monochrome icons
Good: all colorful icons
This task will track all the individual bugs and patches to make all icons colorful throughout Plasma and in all KDE apps. It will require some patches for Breeze to add missing colorful icons, and some patches to Plasma and apps to make them use those icons.