colors.toNumber
The upper range value of the applied color.
Example
<div id="gauge"></div>
<script>
$("#gauge").kendoCircularGauge({
value: 30,
colors: [{
from: 0,
to: 25,
color: '#0058e9'
}, {
from: 25,
to: 75,
color: '#37b400'
}]
});
</script>