Custom Colors/CSS for individual series in a page dashboard

Custom Colors/CSS for individual series in a page dashboard

Hi,
I have a gauge chart that shows me a count of ticket status ie. in progress/late/done/not started. At the moment they chart can be styled with set colors or on a color scale.
Is there anyway to specify a color based upon the series/field - late is red, not started is grey etc... ?
The fields are based on a fixed drop down so there is no chance of mis-spellings or accidental additions.

Thought this would be an abvious feature given how customizable Zoho is. Maybe I've just not found it yet :)
Any help/advice is welcome
Many thanks