feature request ... change grid icon when running on generator

[bmf7777]

I have read the wiki about what to try first before creating a bug report.

Which version of HA do you use?
0.118.4
Which version of the card do you use?
0.1.5
Describe the bug
feature request or help with work around if possible

Configuration of the card
Copy the complete configuration of the card, even if you think it isn't relevant.

  - type: "custom:power-wheel-card"
    solar_power_entity: sensor.solar_power
    ...etc...

Dev console debug output
Add debug: true to your card parameters. Copy the complete output of the card that is logged to your dev console.

Example: power-wheel-cardVersion: 0.0.10Lovelace resource: power-wheel-card.js?v=0.0.10HA version: 0.87.1Report issues here: ...etc...

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.