[web] Match ChatInputBar icon colors with thread color
Summary:
Changed multimedia upload and send button icon colors on ChatInputBar on web to match the thread color, similar to how it looks
on native:
Related Linear issue with full context.
Test Plan:
Tested on Chrome/Safari and works as expected:
Before:
After:
Reviewers: atul
Reviewed By: atul
Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga
Differential Revision: https://phabricator.ashoat.com/D3916