From version 39 of Chrome for Android on Lollipop, you can now distinguish the meta tag for the Theme color by the color of the Settings toolbar. The syntax is simple: add your own page with a meta tag called = “theme color”, and set the content to a controlled CSS color.
To set your own background to your favorite color:
<meta name="theme-color" content="3aafd6">
How they look out, how they appear. Chrome for Android will choose the higher resolution icon you want. We are giving a PNG file with 192 × 192 pixels. For example:
<link rel="icon" sizes="192x192" href="nice-highres.png">