I am new to web mapping. I would like to create a SLD style that colours the points if they fall between certain numbers for example 0-500. I know I could manually create each colour for each value and assign it. However this is not practical when you reach high numbers of values that need colouring. One option is to group them into small groups of 10, but that still gives me 50 colours to do.

I have a few hundred points, served from GeoServer via WMS, that rance from 0-500.

How would I go about doing this with SLD? The image below shows an example of what I would expect in a desktop client.

![Layer styling](https://i.stack.imgur.com/8pDXY.png)