Colors for alerts in devices

In devices there are 4 different colors for a group or host which states the status.

Red - There is an warning,error, critical

Blue - All alerts are acknowledged.

Grey - Nothing wrong

Black/Bolt - Host down/ can\'t connect to collector.

I would like to see the alerts get split up in the following:

Warning - Host/group gets yellow

Error - Host/group gets orange

Critical - Host/group gets red

No alerts - Host/group gets green.

Host down - Black/Bolt

All alerts acknowledged - Blue

Of course, the highest alert states the color.