Add background to radar text.  Code cleanup.
Add background to radar text.  Code cleanup.

klaus385/openpilot,TheMutley/openpilot,TheMutley/openpilot,vntarasov/openpilot,vntarasov/openpilot,klaus385/openpilot,TheMutley/openpilot,vntarasov/openpilot,klaus385/openpilot,vntarasov/openpilot,TheMutley/openpilot,TheMutley/openpilot,klaus385/openpilot