The forums that TLF run are called VBulletin. You can change the look by getting a style that is for your VBulletin version. All Mushtaq has done is buy a ready made skin and tweaked it to fit. Most skins will have a link to the original creator which is what has been done here. You can take away the copyright but it would normally costs you extra £'s maybe several £100s as you would be the owner then.