Windows 10: Change app background color

I've been able to change most of the colors (Active & Inactive Title Bar, etc.) using Superfly's S.M.A.C.C. However, I'd like to change the background of certain apps, whose background always seems white. e.g. I notice that when I start Calculator, it flashes blue, then turns white. I'd like to keep it a color different than white. Is there a way to do this using S.M.A.C.C. I've attached a screenshot of what happens with the calculator.
Thank you,

:)

 

Win 10 Background Color in start menu

Thanks, I wanted to change the background color of particular apps. I am curious as to how the background color is determined since almost all of my apps have the same color except for a few.

 

Win 10 Background Color in start menu

Hi Neil,

Thank you for posting your query on Microsoft Community. We are sorry for the inconvenience caused.

You can change the background color of the start theme but you can’t change the background color of the particular app.

If you want to change the background color of the start theme please follow the below steps and check if it helps,

1. Go to Settings.

2. In Personalization select Colors.

3. Select the particular color of your preference and change it.

Reply us if you have further queries we will be glad to assist you.

 

You can only select between dark or light skin in settings app/personalization/color or on some UWP(Store) apps, in their own settings(gear icon).

SMACC works with System32 programs and the only changes made to apps are the same ones you get when using settings app(the accent colors for the title bar(for some) and the very thin window frame.
And this is also changing as more & more UWP apps get the new Project Neon skin(which I personally like much better) now called "Microsoft Fluent Design System".

 

Thank you, Cliff. I like the dark background much better as it's easier to see. How did you get that background? i.e. How can I get Project Neon or Microsoft Fluent Design System?

 

If you have Win10 updated to at least the latest current build( 15063.332), many UWP apps have Neon now.

To set for dark in settings:




On some of the individual apps(but not calculator, as it's automatically done from the settings app) you need to set Mode to Use system theme:

 

The App Splash Screen should be your Accent Color:

If you're on the latest Insider Build with Transparency enabled, you should see 'Fluent Design'

 

Thank you for this information. I'm not sure what Insider Build is, so I'm probably not on it. This is what I see when I choose Personalize>Colors:

this is what I see.