Policy
Use solid color for Start background
This policy setting controls the Start background visuals. If you enable this policy setting, the Start background will use a solid color. If you disable or do not configure this policy setting, the Start background will use the default visuals. Note: If this policy setting is enabled, users can continue to select a color in Start Personalization. However, setting the accent will have no effect.
afec78ae1201 DwmDisableAccentAndGradient Registry
Copy registry mappings
HKLM\SOFTWARE\Policies\Microsoft\Windows\DWM\DisableAccentGradient (enabled) = 1
HKLM\SOFTWARE\Policies\Microsoft\Windows\DWM\DisableAccentGradient (disabled) = 0Policy notes
This policy setting controls the Start background visuals. If you enable this policy setting, the Start background will use a solid color. If you disable or do not configure this policy setting, the Start background will use the default visuals. Note: If this policy setting is enabled, users can continue to select a color in Start Personalization. However, setting the accent will have no effect.