Hey, you have to change it in the registry, I definitely still works since I have done it one week ago. Changing it inside VS is disabled by MS.. only one of their bad High Contrast decisions..



Since you are a coder I assume you know what you are doing, try to follow the instructions again.



Just export your Dark (not high contrast) key under "HKEY_CURRENT_USER\SOFTWARE\Microsoft\VisualStudio\14.0_Config\Themes"

i.e my Dark VS Dark theme has the key: {1ded0138-47ce-435e-84ef-9ec1f439b749}

after exporting open it in editor and change all "{1ded0138-47ce-435e-84ef-9ec1f439b749}" to the key of the High Contrast VS Theme: i.e: {a5c004b4-2d4b-494e-bf01-45fc492522c7} (on my pc..)



Then save and run the regkey file to write the changes, then start VS.



Hope this helps.