Quoting Brian T Loomis
I am a BIG fan of Metroid. anybody who plays Metroid knows what an energy tank is. buuuut...."no disrespect or nothin" ur energy tank should be blue. (excesive thinking session)---u know, thanks to u, I have been inspired to start making Metroid stuff (once I make my Samus). thanks!
Actually the energy tank IS yellow. I bet you are thinking about the reserve tank.