What is the proper way of custom theming?

[JaoHundred]

Hi, I'm trying to change a little bit of the default black and white color in the dark and light theme. I searched through the wiki documentation, saw some of discussions posts, and then override the default background brush. It didnt work as expected or I am missing something.

Originally I was doing the app styles and colors in separate files and calling them in the app.axaml and everything worked but the changing of colors, I thought doing it directly in app.axaml could give me a clue but no success, if you need more information please let me know.

[SKProCH]

Hello, the quick answer is you probably need to declare it like this:

<ResourceDictionary>
    <ResourceDictionary.ThemeDictionaries>
        <ResourceDictionary x:Key='Light'>
            <SolidColorBrush x:Key='BackgroundBrush'>White</SolidColorBrush>
            <SolidColorBrush x:Key='ForegroundBrush'>Black</SolidColorBrush>
        </ResourceDictionary>
        <ResourceDictionary x:Key='Dark'>
            <SolidColorBrush x:Key='BackgroundBrush'>Black</SolidColorBrush>
            <SolidColorBrush x:Key='ForegroundBrush'>White</SolidColorBrush>
        </ResourceDictionary>
    </ResourceDictionary.ThemeDictionaries>
</ResourceDictionary>

As described here https://docs.avaloniaui.net/docs/guides/styles-and-resources/resources

Is this help?