I have created a custom icon for the action bar with color 333333ff(RGBA) and 60% opacity and 32 dp as per the docs. But the icon is barely visible in the action bar. Only when i long click on the space where the icon is supposed to show, i can see it a bit more distinctly. What is wrong with the design of the icon?
Here's a screenshot :

Here is a screenshot when i long click on it :

It is very clear if i use it within the body of the app, instead of in the action bar. So does that mean there is some extra transformation done by the action bar on icons?