all I needed.
Thanks.
You can also install some themes from the package manager. Just search
plymouth-theme.
On booting Trisquel, we have all the image of Trisquel (a Triskel on stars,
trees). But how can I change it?
Thanks.
I presume you are talking about the plymouth theme background.
The simplest way to change the background of the plymouth theme is to replace
the /lib/plymouth/themes/trisquel-logo/background.png with you're preferred ;
you'll need to be root to do that; and to take effect you'll need to run