As a web developer, dabbling in (S)CSS comes with the territory. Big fan of tools such as Espresso Editor that allows live (s)css editing. The editor can do a good job on larger projects. However for quick (S)CSS edits on a page/site, a browser extension is a great alternative. There are some easy to use live css editor extensions.
Now on our end we are really loving SCSS - SASS and LESS. Live editor browser extensions for SCSS are rare. There are maninly 2. But one is hard to use as it does not allow it to show the editor in a separate window... Good luck testing responsive view for 320px wide devices.
One tool I have been using a year plus is Amino Editor and it's Chrome extension. First tests show that this extension will not work out of the box in Orion. (I gave the developer of the extension a heads up). But honestly, I have no clue if compatibility for an extension in Orion is something that needs fixing on Orion's end on on the Extensions's end. I would love to be educated on that.
Long story short: My life would be complete if the Amino Editor Extension would run natively in Orion
Some links to the Amino Editor:
If there is anything I can assist with in doing testing on this or contacting the Amino Editor developer... Please let me know!