Fixed importer table background color

[Godmartinz]

Description

There was a color discrepancy with the importer while using dark mode themes. background color has been adjusted:
BEFORE:

AFTER:

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• [x ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A
• Test B

Test Configuration:

• PHP version:
• MySQL version
• Webserver version
• OS version

Checklist:

• I have read the Contributing documentation available here: https://snipe-it.readme.io/docs/contributing-overview
• I have formatted this PR according to the project guidelines: https://snipe-it.readme.io/docs/contributing-overview#pull-request-guidelines
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[what-the-diff]

PR Summary

• New Style for Specific Table Elements
  The team updated the layout files and made changes to the style used for certain table elements, specifically those tagged with 'warning' in our interface. This will improve the visual cues and overall user experience of the software.

[marcusmoore]

This feels a little weird but works 😅 👍🏾