Let me give you some nice tips to how to add your name, bold text, coloring form in sql injection...
i use HTML command method to add my username with red color..
[#] Basic:
[+] Some HTML Code/Command is
<b> for bold
<color> for color
<tr> <td> <img> <a href> <title> < body>
I think you know basic shit above this...
[#] How to use in SQLi:
Now you have one sqli site....
and its appear 2 column injectable
that means you can simple add version() to get version info: (Ex.. select 1,version(),3--+)
so NOw we do some fantastic....
[1] If You want to add your name in webpage like mine one... !!
Then you need to hex your name or html code....
HOW--> just go to this site and enter username -->
You get HEX value of username or name or html code
Ex...
Now we have two hex value...
so put on your injection syntax prefix with "0x" in "concat()" section like...
Above code is execute as "Get version info, Color of font is Red, tony stark"
now you understood how it work...
simply you can add more code to customization, add image using this tut...
i use HTML command method to add my username with red color..
[#] Basic:
[+] Some HTML Code/Command is
<b> for bold
<color> for color
<tr> <td> <img> <a href> <title> < body>
I think you know basic shit above this...
[#] How to use in SQLi:
Now you have one sqli site....
and its appear 2 column injectable
that means you can simple add version() to get version info: (Ex.. select 1,version(),3--+)
so NOw we do some fantastic....
[1] If You want to add your name in webpage like mine one... !!

Then you need to hex your name or html code....
HOW--> just go to this site and enter username -->
You get HEX value of username or name or html code
Ex...
Now we have two hex value...
so put on your injection syntax prefix with "0x" in "concat()" section like...
Above code is execute as "Get version info, Color of font is Red, tony stark"

now you understood how it work...
simply you can add more code to customization, add image using this tut...