Summary:
This is in support of T10165 specifically, and #consistency more generally.

The chosen colorful icon for the {nav Profiles} page isn't //perfect//, but I think it's better
than what's there right now.

Test Plan:
Before: {F7450045}
After: {F7474078}

Reviewers: #vdg, #konsole, GB_2

Reviewed By: #vdg, GB_2

Subscribers: ndavis, GB_2, konsole-devel

Tags: #konsole

Maniphest Tasks: T10165

Differential Revision: https://phabricator.kde.org/D24273