Where does android get complementary colors from? @color/mtrl_text_btn_text_color_selector

Issue

My file does not have these res/values/colors.xml, and there is no other file with colors in res floder.

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="purple_200">#F44336</color>
    <color name="purple_500">#FF9800</color>
    <color name="purple_700">#FFEB3B</color>
    <color name="teal_200">#FF03DAC5</color>
    <color name="teal_700">#FF018786</color>
    <color name="black">#121212</color>
    <color name="white">#982323</color>
</resources>

But

 Inherits from: @style/Widget.MaterialComponents.Button.TextButton:     android:android:textColor = @color/mtrl_text_btn_text_color_selector

Where i can find @color/mtrl_text_btn_text_color_selector ?

Solution

It is defined by the default style in the library.

The res/color/mtrl_text_btn_text_color_selector.xml is provided by the library.
You can find the source here.

Answered By - Gabriele Mariotti