Control opacity of blogger-navbar

Recently Blogger released new transparent navbar styles. It is a nice move on blogger's part to encourage its users put back the navbar again. Users used to hide the blogger navbar as it did not match their template. The transparent navbars mix with the template colors and hence give a better look.
There is one thing though that I still think is missing. The level of transparency can not be controlled. Here is a work around to achieve this.

New Transparent Navbar Styles From Blogger

Blogger has introduced two new navbar styles - Transparent Dark and Transparent Light. Previously only a few styles were available - Blue, Black, Tan, and Silver. These styles couldn't readily mix with many of the blog designs. So blogger introduced the transparent styles.

Here is what the have to say about it

Remove the blogger navigation bar.

At the top of your page you may see a bar this is called 'Blogger Navbar'.

If you don't like you can remove it just by adding a few lines of CSS (Cascading Style Sheet) code.