Status Bar Colour Sticks When Modifying settings.json

Describe the bug
With vim.statusBarColorControl = true, when modifying any entry in VS Code's user settings file (settings.json) from within VS Code the status bar colour will get stuck until settings.json is saved and a mode change occurs (without doing this the status bar colour will remain stuck even on restarting VS Code).

To Reproduce
Steps to reproduce the behavior:

1. Ensure "vim.statusBarColorControl": true
2. Open settings.json in VS Code (Preferences: Open Settings (JSON))
3. Modify any entry (e.g. for the entry "editor.rulers": [79], replace the 79 value with 80 via a specific mode like R)

The status bar will remain bright red (default [R]eplace mode colour) due to VSCodeVim not updating the settings.json file properly with the new mode colour. This colour will then stick until settings.json is saved by the user and then another mode change occurs.

Expected behavior
Changing mode should continue to make the status bar change colour to reflect the mode change.

Environment (please complete the following information):

• VSCode version: 1.40.2
• OS: Windows_NT x64 10.0.18362.476 (Win 10 Pro)

Reproduce the issue in VS Code by enabling vim.statusBarColorControl, opening settings.json, and changing a value in a mode. Trace the status-bar color update triggered by mode changes and settings edits; done means the color continues to follow the current mode without requiring a save or additional mode change.