Adjust footer background and link colors for better readability

[eporter23]

Is your feature request related to new functionality not yet included in the product? Please describe.
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Is your feature request related to a problem or a change to existing functionality? Please describe.

• Link color in the footer does not provide good contrast.

Describe the solution you'd like
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• Change the footer background color and link colors to match current Emory Libraries' color scheme. This request does not include a full revamp of the footer.

Describe alternatives you've considered
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• Status quo

How will this impact users?
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• Users interacting with links in the footer have difficulty reading the text.

Additional context
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• The ETD application was built in 2017 on a very short timeframe and soon after, the Libraries implemented a new style guide.
• This request was discussed with Mark Bussey in an ETD meeting on 3/6/23 and the Emory team provides new colors, this could be addressed within our maintenance agreement.
• Related request includes adding a new link to the footer.