Use lighter shade of gray for placeholder text displayed in the genetic variants fields

Description

We had a suggestion from David Adams at the NIH. He thinks the placeholder text in the genetic variants field on the patient form should be a much lighter grey, because it's easy right now to mistake the placeholder text for real entries. they are using the Kiwi skin. here's how it looks:

Environment

None

Status

Assignee

Sergiu Dumitriu

Reporter

Daniel Gross

Labels

External issue ID

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External issue ID

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Epic Link

Fix versions

Priority

Medium
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