Kali dev team did few things that seems almost too much work, so in this article I will explain one of two things about GRUB and somewhat make this post little unnecessarily long and boring cause I like to write How to Change GRUB Splash Image, Background, Font Color on it's actually Kali Linux GRUB splash image). GRUB checks a number of different places for background settings, and it varies by version here is the first place checked for two versions This is a simple guide on how to change GRUB background in Kali Linux (i.e. For example as in this picture: For example as in this picture The Ubuntu wiki has a detailed guide.First, you need to make sure the image is in the right format: a 256-color non-indexed RGB JPEG. To change the background of Grub, please add the GRUB_BACKGROUND=, script, followed by the location of the image file that will be used as the background.
Supported file format: jpeg, tga, and png. All you need is the picture file you want to set as background. Since Grub2 there's an easy way to change its background wallpaper, without any third-party software. This article explains how to change Grub is the default boot loader of Ubuntu Linux. But starting from Debian Squeeze, GRUB adds a background image which looks good (better than the boring background colors). On Debian Lenny (and previous versions of Debian), you might have got tired of seeing a blue box with black background for GRUB when the Linux was booting up.