This is a simple tip to fix Black Background For Transparent Images in Blogger Header.Recently all blogspot using bloggers were unable to upload transparent images to the blogger header that is instead of blog title and description which made the transparent background appear as black that disturbed a lot of users.Is was only possible after making some changes in the template so that you can add the header image from a different source.But you do not require to make changes in your template,all you have to do is just follow the below steps until this bug is permanently fixed by blogger team.
Steps To Fix Blogger Displaying Black Backgound for all Transparent Images:
*Goto Google Plus Account Setting By Clicking this link
*Then scroll down until you find the Photos section unlike the image uploaded below.
*By default Automatically Enhance New Photos options will be checked.This is the reason for the black background.Uncheck that box.
*Now try uploading your transparent image and it will not will not annoy you.