Conditional formatting in Habpanel custom template

hi there, after playing around with habpanel widgets, I’m starting my own template.

I would like to change the color value for the font of a numeric value.
In the sitemap I would do something like this:

```
        Text item=Aqi_Level valuecolor=[
                Aqi_Level=="-"="lightgray",
                Aqi_Level>=300="#7e0023",
                >=201="#660099",
                >=151="#cc0033",
                >=101="#ff9933",
                >=51="#ffde33",
                >=0="#009966"
            ]
```

using angular js I can switch between 2 colors with:
ng-style="{ color: itemValue(item.name)==‘OFF’?‘red’:‘green’ }"

but, what if I would have more conditions?
thanks