Would like to recommend that TFP become capable of using .png file format......to include the use of alpha channel for transparency.
.png's could be used anywhere that .bmp or .jpg would be used
Reason is that users could have transparency where needed without use of pure magenta color....that allows magenta as a color and usage of a now more common file format (.png) and less trouble filling with magenta color....and able to use a common Photoshop (and many other programs) format...often used on www.
Use of any other file format that supports transparency would be OK too.
Use of .png would be easier for TFP users.
