As most of these apps doesn't have support for custom CSS you can get around that by using [subfilter](http://nginx.org/en/docs/http/ngx_http_sub_module.html) in Nginx or a browser addon called Stylus.
As most of these apps doesn't have support for custom CSS you can get around that by using [subfilter](http://nginx.org/en/docs/http/ngx_http_sub_module.html) in Nginx or a browser addon called Stylus.
## Subfilter method
## Subfilter method
### nginx
### Nginx
Add this to your reverse proxy:
Add this to your reverse proxy:
```nginx
```nginx
@ -42,37 +42,38 @@ sub_filter_once on;
```
```
Where `APP_NAME` is the app you want to theme and `THEME.css` is the name of the theme. e.g. `aquamarine.css`
Where `APP_NAME` is the app you want to theme and `THEME.css` is the name of the theme. e.g. `aquamarine.css`