The Colors panel of the Customize User Interface dialog allows you to customize the look of the 3ds Max interface. You can adjust the colors for almost every element in the interface, giving you the freedom to design your own unique style.

Customize menu – Customize User Interface – Colors tab

Customize menu – Customization – Customize User Interface – Colors tab

The quad menu colors cannot be customized from the Color panel. To customize quad menu colors, use the Advanced Quad Menu Options dialog.

1-Open the Customize User Interface dialog to the Colors panel.

2-From the Elements drop-down list, choose the category of the interface element whose color you intend to change.

3-In the list below the Elements field, highlight the element whose color you intend to change. The Color swatch shows the current color of the element.

4-Click the Color swatch and then use the Color Selector dialog to choose a new color. Click the Close button to set the color. To restore the color that was active at the time that you opened the dialog, highlight the element and click Reset.

5-Continue choosing elements and changing colors as necessary.

6-To finish and apply the color changes to the interface, close the dialog by clicking the X button in the upper-right corner.

Source: https://autode.sk/2LxllhP

CGTricks | https://cgtricks.com