Customers in Kimai are used to manage project and activities, which are then used for time-records.
It is very common to have one customer for your own company, to track times for administration and other internal work.
You can configure default values for new customers in your local.yaml like this:
kimai: defaults: customer: timezone: Europe/London country: GB currency: GBP
This can also be configured directly in the System configuration within Kimai.
Each customer can be assigned its own color, for easier identification in the timesheets.
If a project or an activity linked to the customer does not have its own color, the customers color will be used.
The default color code is