# Ubuntu – How to change Alt+Tab window highlight color in Unity 2D

colorscompizthemesunity-2dworkspaces

i have Ubuntu 12.04, and i run unity 2D (so i can run all of my monitors with xinerama).

a problem that i have is when i hit alt+tab, it highlights the new [active] window with a white border. well, if the window i want is behind another window that has a lot of white (like a web browser that is opened to a page with a white background (i.e. 80% of the web)), i can't tell which window i've alt-tab'd to.

where can i change the color and thickness of the window when it has been highlighted via alt+tab? i'd like a nice, thick orange or red background.

is this a CCSM thing? or do i need to alter via the metacity files?

• Based on the answer found here: How I turn off backlight around switcher icons

You need to edit the file /usr/share/unity/5/launcher_icon_glow_200.png. I used GIMPs Colors -> Map -> Color Exchange to edit the color to my liking.

I first used the referenced answer to delete the background PNG as described and then was able to locate the file(s) you want to edit. In my case, I found that just changing the glow was not enough.

First make a back up of the two files, launcher_icon_selected_back_150.png and launcher_icon_glow_200.png.

cd /usr/shar/unity/5
sudo cp launcher_icon_selected_back_150.png launcher_icon_selected_back_150.png.bak
sudo cp launcher_icon_glow_200.png launcher_icon_glow_200.png.bak


You can edit the two files however you like. To keep it simple, I edited just the background color:

sudo gimp launcher_icon_selected_back_150.png

I personally made the selected background darker. If some Gimp effect isn't working, make sure you change the color mode to RGB.

Here's what it looks like when I alt + tab looks now: