please post how you are changing the color or something else..
what exactly you have changed and got above error..
you dont change anything just click on template and go to save continue button click on it and you have this error
how to change color simple just change 336600 to 666699 or any other html color
in your plug-ins directory, replace tipsoftheday.php with the file in the attachment.. & report back
That resolve problem any chance to add bbcode inside this plugin
Thank you very nice plugin