Yeah, tank controls can be a little weird if you aren't used to them. Little bit of practice though and I'm sure you can be running the enemy tanks around the map in no time though - until they ambush you and spam the screen with bullets and missiles anyway ;)
As far as the tank color, that's actually a good point. If I keep with the green tank color after the jam (I do want to update the game a little bit more) I'll look into ways to make it pop a bit more :)
Glad you enjoyed! Tanks for playing :)