We simplified the color options to target the main bootstrap elements and just a few others. The navigation icons are now standard buttons and use bootstrap styling.
This is because there are now over several hundred different styling possibilities based on the preset and other styling choosers where you can mix and match elements such as page layout, section style, preset style, and course display tiles.
Having individual color pickers with all the options was a nightmare to try and ensure it always looked good no matter what any end user might choose to configure. So we slimmed it down to provide more options.
You can use the color page options such as the SCSS boxes to further customize the colors with your own CSS or setting a SCSS variable color.