Change Ubuntu default color

Question

I installed a Mac OS theme on Ubuntu, all menus are blue, except volume and brightness sliders How can i change them? and how can i change the login screen from purple to an image? Thanks

Answer 1

By default in Ubuntu 18.04 the shell theme is the file /usr/share/gnome-shell/theme/ubuntu.css

to change the required colors.. you need to edit this file..

open the file with below command

sudo -H gedit /usr/share/gnome-shell/theme/ubuntu.css

look for the part

/* Slider */
.slider {
  height: 1em;
  -slider-height: 0.3em;
  -slider-background-color: #363633;
  -slider-border-color: #1f1f1c;
  -slider-active-background-color: #dd4814;
  -slider-active-border-color: #bb3e11;
  -slider-border-width: 1px;
  -slider-handle-radius: 6px; }

and change the colors as you wish..

for example:

/* Slider */
.slider {
  height: 1em;
  -slider-height: 0.3em;
  -slider-background-color: #363633;
  -slider-border-color: #1f1f1c;
  -slider-active-background-color: blue;
  -slider-active-border-color: blue;
  -slider-border-width: 1px;
  -slider-handle-radius: 6px; }