Using Windows 10 color customization settings, you can easily update colors on your start menu, taskbar, etc.

Set 'Make Start, taskbar and action center transparent' option to 'Off' value.

In 'Windows Settings' App, Navigate to Personalization -> Colors settings.

You can notice that start menu, taskbar, and action center background color immediately changes to newly selected color. Setting 'Show color on Start, taskbar and action center' to 'On'. Once you change accent color to your favourite color, you can also set start menu, taskbar and action center background color to your new accent color by How to change start menu, taskbar and action center background color

Once you choose new color, this accent color will be used as start menu application icons and live tiles background color.

In this example we are setting 'Orange' as new accent color.

In 'Choose your accent color', select any of your favourite available color as new accent color.

Set 'Automatically pick an accent color for my background' option to 'Off' value.

Navigate to Personalization -> Colors settings.

Open Windows 'Settings' App from start menu or by typing 'Settings' in cortana search box, and selecting 'Settings' Windows App.

(And, if you want your taskbar to change colors when your desktop changes the. You can change start menu icons and live tiles background color (also called as an accent color) to your favourite color in 'Windows Settings' using below steps The recent Windows 10 versions come with a new Light Theme (Light color. How to change start menu icons or live tiles background color Change Windows 10 Start, action center, and taskbar color Still in the Colors tab, scroll down until you see the palette of colors and choose one.

Change color of taskbar windows 10