Currently, the threshold configuration is limited to 'success', 'warning', and 'error' keys. It would be beneficial to expand this by allowing custom keys and a wider range of severity levels (e.g., 'critical', 'info') tailored to the specific metric being evaluated.

Together with defining custom keys, it is required to also specify the corresponding color or category for visualization. For example, 'critical' could be represented by red, and 'info' by blue. Right now it seems that multiple severity levels can be defined, any level other than 'Error' and 'Warning' is displayed in green, suggesting a successful outcome.