Thanks Nick Butcher for this nice series of articles. One question:

If my colors.xml follow this naming pattern:

colorBackground
colorSurface 
colorOnSurface

colorPrimary
colorOnPrimary
colorSecondary
colorOnSecondary

colorPrimaryButton
colorOnPrimaryButton
colorSecondaryButton
colorOnSecondaryButton
colorOnSecondaryButtonVariant

textColorPrimary
textColorSecondary
textColorSecondaryVariant

colorError
colorOnError

rippleOnSecondaryColor
separatorColor
...

And then use like this:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/colorPrimaryButton" android:state_enabled="true"/>
    <item android:alpha="0.38" android:color="@color/colorPrimaryButton"/>
</selector>

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/colorOnPrimaryButton" android:state_enabled="true"/>
    <item android:alpha="0.38" android:color="@color/colorOnPrimaryButton"/>
</selector>

styles.xml

<style name="App.Widget.Button.Primary">
    <item name="backgroundTint">@color/selector_for_btn_primary_background</item>
    <item name="android:textColor">@color/selector_for_btn_primary_text</item>
</style>

Do I benefit from custom attributes?

Thanks.