New UI Custom Colour Gear Wheel Doesn't Have a Label for Screenreaders
New UI Custom Colour Gear Wheel Doesn't Have a Label for Screenreaders

Fixes: CNVS-23261

Test Plan:
- as a user with the new UI turned on using a screen reader
- navigate to the dashboard to ensure the color changing cog on each
  dashcard announces in a way that it's function makes sense

Change-Id: I1a2f89e1c1a5039791718a6028d887dc3dbef16a
Reviewed-on: https://gerrit.instructure.com/63801
Reviewed-by: Jennifer Stern <7e594e5cba47371ac9ee694a84b9d94f9f6ec815@instructure.com>
Product-Review: Jennifer Stern <7e594e5cba47371ac9ee694a84b9d94f9f6ec815@instructure.com>
Tested-by: Jenkins
QA-Review: Myller de Araujo <e5c7c5e1b7f2ce5e9870cc98ec52b20b3006cb48@instructure.com>

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