Change blog post icon with date

Is it possible to change the blog post icon where the date shows? If so, how can I do it? Shown in light blue on the attached screen shot.

 

Hello,

It is an date-bg.png image with help of background property we are displaying this in the blog post of our theme ,
If you want to change it then,
Go to images directory present in your theme directory and replace your image with present date-bg.png image or edit it.

The name of image is "date-bg.png"

Note:- Use same name for your edited image and remove the current image.

See the link for the refference.
http://www.inkthemes.com/how-to-edit-internal-files-through-ftp/07/

I hope this will help you.

 

Thanks, your suggestion worked perfectly.