feat: improve classification banner colour support for distribution or other caveats

[Racer159]

Is your feature request related to a problem? Please describe.

As Jacquline I want to configure my system to more closely match my exact classification without having to just fallback on collateral.

Describe the solution you'd like

• Given I have a system with additional caveats (i.e. SECRET//NOFORN)
• When I set that in UDS Core here:

uds-core/src/istio/common/chart/templates/classification-banner.yaml

Line 64 in 2d49dc3

UNCLASSIFIED = { backgroundColor = "#007a33", textColor = "#ffffff" },

• Then the banner chooses the appropriate colour (i.e. Red)

Describe alternatives you've considered

We could add custom colour support but generally these markings are pretty standardized and it is easier to just provide the text.

Additional context

Astro UX has a decent write up on these here: https://www.astrouxds.com/components/classification-markings/#official-requirements

[mjnagel]

@Racer159 to clarify on this ask, the color is always/only based upon the classification level is that correct? Reading from the Astro UX link:

Astro banner component colors match what government users are familiar with in physical labels, their workstations, and other applications. Adding a colored background is NOT required by the government, but does help with recognizing classification levels at a quick glance. Similarly, there are no particular color values required by the ISOO for specific classification levels for digital markings. The background colors for the Astro banner components are based on the traditional Pantone colors used in the relevant Standard Form labels for SF 706 through SF 712 with the new addition of the purple CUI color from SF-902. The text colors for the banners are either white or black (the two text colors used on the physical labels) depending on which best contrasts with the background color.

Is this ask more about supporting the text for SAFEGUARDING-ACCESS REQUIREMENTS and DISTRIBUTION REQUIREMENTS, and ensuring that we maintain the correct color based on the level (currently if someone added additional text it would fallback to the unknown color scheme of white/black I believe)?

[Racer159]

@Racer159 to clarify on this ask, the color is always/only based upon the classification level is that correct?

...

Is this ask more about supporting the text for SAFEGUARDING-ACCESS REQUIREMENTS and DISTRIBUTION REQUIREMENTS, and ensuring that we maintain the correct color based on the level (currently if someone added additional text it would fallback to the unknown color scheme of white/black I believe)?

Yes - and yes