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Log in and boot screen color

Ubuntu < 20​

edit '/usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.script':

Window.SetBackgroundTopColor (0.11, 0.11, 0.11); # Nice colour on top of the screen fading to

Window.SetBackgroundBottomColor (0.11, 0.11, 0.11); # an equally nice colour on the bottom

There are also many lines containing "noise", remove them.

then update with sudo update-initramfs -u

Ubuntu 20​

In Ubuntu 20 it's `/usr/share/gnome-shell/theme/Yaru/gnome-shell-theme.gresource`

For loginscreen change '/usr/share/gnome-shell/theme/gdm3.css' noise-texture.png line of class lockDialogGroup. Should look like this:

#lockDialogGroup {<br>
background: #000000 url(file:///home/darius/Pictures/lockscreen.jpg);<br>
background-repeat: repeat;<br>
background-size: cover;<br>
background-position: center;<br>
}

For grub change '/usr/share/plymouth/themes/default.grub' color. and update grub with sudo update-grub

.login-dialog .modal-dialog-button {
padding: 4px 18px;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
background-color: #6c757d;
border-color: #6c757d;
color: #f6f5f4;
}

.login-dialog .modal-dialog-button:hover, .login-dialog .modal-dialog-button:focus {
background-color: #5a6268;
border-color: #5a6268;
}

.login-dialog .modal-dialog-button:active {
box-shadow: none;
background-color: #43494e;
border-color: #43494e;
}

.login-dialog .modal-dialog-button:insensitive {
color: #9a9b9b;
border-color: #c5cbd0;
background-color: #fbfbfc;
box-shadow: none;
text-shadow: none;
icon-shadow: none;
border-color: #43494e;
background-color: #43494e;
color: rgba(246, 245, 244, 0.7);
}