Fixes #3413 - Override theme colors for modals as they don't support theme yet.
Fixes #3413 - Override theme colors for modals as they don't support theme yet.

TimCliff/steemit.com,TimCliff/steemit.com,steemit/steemit.com,steemit/steemit.com,TimCliff/steemit.com,steemit/steemit.com