Hi all, I have an XYZ point feature class representing bathymetry.
I have applied a label expression to label the points in the same fashion as soundings on a nautical chart.

For example, the label above represent a depth of 3.8 metres.
What I want to do is color the labels so they graduate throughout the depth range as you might see on a coloured fair sheet.
For instance, a shallow sounding might be a red colour, whilst a deep sounding might be a blue colour.
How can I link a color ramp to my labels?