PhpBB3 BBCodes

But that make black strip in backgroung and i don't want like that, I just want to put small watermark text at corner But problem is when i put image option (png) watermark it show deform watermark which show spotted line around text and smaller the watermark more deformation in text. But when i use ...

Hello

Happy New Year

Please help me, i am not coder not much expert.
I want to create other color zone around text watermark option. How can i do this?
In which file i can see code which is for color and size for watermark.