Is it possible to use the same colors that TableView uses elsewhere in my project?

[catmanjan]

For example, I want a TabView to have the same background color as the header row of TableView

How would I do that? I've found Resources.xaml but I can't work out how to reference those in my solution

[w-ahmad]

Yes, you can override any resource listed in Resources.xaml in your application.

<Page.Resources>
    <SolidColorBrush x:Key="TableViewHeaderRowBackground"
                     Color="{ThemeResource SystemAccentColor}" />
</Page.Resources>

[catmanjan]

I don't really want to override the color - but I want to use that same header color elsewhere in the project?

For example what is this default gray color in the header?

Notice how my tabview is slightly different color from the table header

[w-ahmad]

try this:

<tv:TableView ItemsSource="{Binding Items}">
    <tv:TableView.Resources>
        <SolidColorBrush x:Key="TableViewHeaderRowBackground" Color="Transparent" />
    </tv:TableView.Resources>
    <tv:TableView.Background>
        <SolidColorBrush Color="{ThemeResource SubtleFillColorSecondary}" />
    </tv:TableView.Background>
</tv:TableView>

[catmanjan]

That gives a darker gray, its weird - for example I tried:

<TabViewItem Header="Warnings" Background="{StaticResource SubtleFillColorSecondaryBrush}">

Which resulted in #F0F0F0

but, the table header is #F6F6F6

Any idea why theyre different?

[w-ahmad]

First, override TableViewHeaderRowBackground to make the header row transparent, then you can set the TableView's background to whatever brush you like.