Objective of this PR is to uniformize theme for feedbacks & watch-later button :
secondary color used for feedbacks everywhere
tertiary color used for watch-later everywhere
Impacts :
On schedule/favorites page, watch later button is now using tertiary instead of secondary (which is reserved for feedbacks), with impact on the talk card "spray"
Before
After
On Talk Feedback selector, header should be using secondary instead of tertiary + same changes than before on talk card's spray / watch-later button
Objective of this PR is to uniformize theme for feedbacks & watch-later button :
Impacts :