You can change it here. (e.g. color, font, etc. inside <style>)
<html> <head> <style type='text/css'> #text{ width:580px; font-family:Arial, Helvetica,sans-serif; text-align:center; font-size:0.9em; color:#666; padding-top:15px; background-color:white; border-color:white; border-style:dotted; border-width:1px; } </style> </head> <body> <p id='text'>Digital Art files might be modified by others than the artist.</p> </body> </html>