The whole "new currency to use on Mars" is a joke i hope ? 

However I do like the fact that you support the project (they already accept bitcoins as donations btw). I think you should contact Mars One about this, send them the coins now already and tell them they have potential to be be worth a lot: especially when they help a bit with the promotion (perhaps by adding Marscoin on their sponsors list if you play your cards well).

http://www.mars-one.com/partners/silver-sponsors
http://www.mars-one.com/partners/contributors
http://www.mars-one.com/donate