Don't think you can, wouldn't be fair really. You could make them what ever, as long as you knew which ones were which it would just get really confusing for the other player.
custom chess icons

It would not be unfair, as the opponent would see his/her own choice of pieces. I think it would be a quirky but neat idea. Maybe not one which would often be utilized, but an interesting option nonetheless.
Thank you all for the comments ,And yes i meant designing my own set of icons,
And since each and every one can choose his own desired set i don't see the fair issue relevant ,At the end of the day its all about image files ,For example if any of you used Babaschess application you can download an additional graphic sets, It just came to me that it could be a really cool thing to do ( that if you trust your design skills ) , It can be the modern way of carving your own 'wooden ' chess pieces ,So still if there anybody who can shed some practical light on this i would be really greatful
G'day
Hi
I was wondering if anyone can point me to how can i create my own custom chess icons for online play and how can i implement them
Thank you in advance
Eitan