Just with a quick look, you’ve got the same line at the end of all three snippets and one doubled (targeting editing view) in one?!. The headings.css one is without a ; after white. I’d remove all those lines. 
After removing all that, give this a try. It may or may not work depending on what else is going on. Good luck!
ol>li:not(.task-list-item)::before, .cm-s-obsidian .cm-formatting-list {
color: var(--color-orange);
}