Due to the recent additions of separate Edit Mode mesh colors as theme options, and the Hidden Wire display option, it's time to rework the theme colors for the 3D View. In particular, mesh Edit Mode. The reasoning for this is to ensure all tools and features, such as Hidden Wire, are usable as intended without needing to change the default colors. Doing this will also improve usability by making it easier to distinguish the active object from other objects in Edit Mode.
The below proposal is a near match to what I've been using in my custom theme for months now. I find it much more clear and pleasing to work with. It greatly helps distinguish between the edit mesh and other objects and the 3D View gradient gives a better impression of depth.
- Change Grid color to 737373
- Change Edit Mode wire color to B3B3B3
- Change Vertex Color to CCCCCC
This leaves us with this
Note: ignore the background gradient. I have removed it from the proposal due to inactive wireframes getting lost towards the bottom of the screen.