Change theme from linshare-ui-user 4.0.3

[tgimj34]

Hello,

i would like know how we switch theme.
Before with linshare 2..31 we defined a redirection rule for the css theme file. it had to be done at the web server level (Apache or nginx)
VirtualHost *:80> ... ServerName linshare-user.local ... <Directory /var/www/linshare-ui-user/styles> RewriteEngine On RewriteRule "theme\.default\.(.*)\.css$" theme.red.$1.css </Directory> ... </Virtualhost>
But with linshare 4.0.3, the redirection rule dosen't work.
How do we do now?

Thanks,
Matthieu Jourdan