Created attachment 1879827 [details]
Utilization - Dark mode

Description of problem:
In the Utilization card, can't see the percentage used of the cpu, memory and the storage enough.
More than that, we can't see well their graphs.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.Go to VirtualMachine, choose one.
2.Go to the Overview tab.
3.Look the Utilization card.

Actual results:

Expected results:
The percentages and the graphs should be more visible

Additional info:
https://issues.redhat.com/browse/CNV-18161