App for Lawyers & Accountants needs 'Professional' Styling

This is what a business in Australia was looking for in their app design

We want to style our app to convey a 'Professional' appearance. It's used by Lawyers, Accountants, Doctors etc. who take their work very seriously.

We currently trying to follow material design guidelines, but we find our app looks very bland. I've uploaded a screenshot of our current app, and two mock-ups of more stylized versions, but we're not happy with those mock-ups.

We'd like to see alternate designs for those two mock-ups, that look much more professional.

The specific elements we'd like to improve/focus on are:
* Colour of the top and left nav bars
* Appearance of the left nav, size, icons spacing
* Appearance of the buttons on the top right, so the user knows they are buttons they can press
* Spacing of the dashboard, background colour and spacing, colour/layout of the 'overdue' and 'todo' accordion headings in the 'my tasks' section.
* List view background grey, to be consistent with dashboard, but unobtrusive
* List view tabs to be obvious as tabs, but 'saved searches',… Read more