i want to change grafana background and title ? anyone can tell him.
Right click on the logo image find the name then search your linux box using find command to find the location or search the name on the files using grep on the grafana location
also use right click on the browser then select inspect element to find out the css and the other files related to those text , images or logos
each version is probably different
Keep in mind the above will work until you upgrade and then your changes will be stomped by the upgrade. The correct ways are to either buy the Enterprise version or download the source, make your changes and compile your own.