トム・M:
Syorito Hatsuki :
これはあなたのstyle.xmlに書きます
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- change values below to make same eefect for all EditTexts ->
<item name="colorControlNormal">#c5c5c5</item>
<item name="colorControlActivated">@color/accent</item>
<item name="colorControlHighlight">@color/accent</item>
</style>
<!-- also you can create different styles with values above for many different views ->