The trainer does allow you to edit your blue coins and gold coins which are used to purchase items HOWEVER I think the values are all stored server side, that makes sense for the gold coins as it's a premium currency but they seem to have done the same with the blue coins.
When playing without any internet connection at all I could edit my blue coins however without an internet connection the 'Superstars' menu which let's you unlock characters and skins doesn't show an unlock button, it only allows you to view you you already have unlocked and what attires you have unlocked.
Since reconnecting to the internet the value for blue coins was displaying the edited amount but if I tried to spend more than I originally had it would tell me I had insufficient coins to do so.
The issue could just be down to the method I used or there might have been a patch that changed something after the trainer was released but before I tried the option.
If you're talking about the **** you buy from the store, then no. The coins and blue tokens are purely visual only. It's currently assumed that the data is server side and therefore what you see when the values are changed are purely aesthetics.
So glad I didn't buy it then. I just wanted to have a fun time with friends, not spend forever unlocking stuff. Thanks for the heads up.
To be fair you start with a pretty decent group of characters and you get lots of blue coins from game play. I've played the game for 4 hours and have unlocked all the characters from the in-game store and a number of their alternate attires and to be honest some of the characters I've unlocked I'm probably never going to play as.