colors.toNumber
The upper range value of the applied color.
Example
<div id="gauge"></div>
<script>
$("#gauge").kendoArcGauge({
value: 30,
colors: [{
from: 0,
to: 50,
color: '#37b400'
}, {
from: 50,
to: 100,
color: '#ffc000'
}]
});
</script>