is there something better than this css editor? thanks

Personally I have as yet to find an editor that is actually so good that it beats typing the styles in - but then that is just me.

Here is how I do it.

1. Mock up the page with styles as I imagine them.
2. Open in browser and visualise
3. Use the Inspect Element to tweak styles to look the way I want them.
4. Copy back to .css

Never been one for GUI's that remove the thinking process from coding.

I was going to give the tool to my more advance customers to tweek the website

Thanks,  but I was going to allow a theme change by a tech, using a tool instead of asking to get into the code,  and customer to use it

You are welcome.

but I was going to allow a theme change by a tech

That is fine - a theme change is a complete refresh of the style sheet - rather than incremental changing of styles - that would make a lot more sense.