fix color contrast in outcomes list + find outcomes list
fix color contrast in outcomes list + find outcomes list

Fixes: CNVS-25979
Fixes: CNVS-25975

test plan:
- as an admin using the old or new ui
- navigate to a course that has outcomes (if none of the courses
  have one set up - click into outcomes on the left nav and create
  one or more) see examples:
  old contrast: http://screencast.com/t/eTqzeiJueh
  new contrast: http://screencast.com/t/D175kNFjq4j
- ensure all contrast/styles work on opposite ui

Change-Id: I6e51a188c19b3e7c6d4319ee0315473c40d3cc40
Reviewed-on: https://gerrit.instructure.com/71317
Tested-by: Jenkins
Reviewed-by: Colleen Palmer <387ba1943871e60965e6b44638a2f2e1ab9b8469@instructure.com>
Product-Review: Colleen Palmer <387ba1943871e60965e6b44638a2f2e1ab9b8469@instructure.com>
Product-Review: Chris Hart <b82b40b84a2f06957ec9caf1768340bd6b929cc4@instructure.com>
QA-Review: Myller de Araujo <e5c7c5e1b7f2ce5e9870cc98ec52b20b3006cb48@instructure.com>

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