I love the reviews you leave on all the games. Your comments are very constructive and help us see the things we can improve :)
Ironically, someone on the team mentioned the same thing about the color of the hearts, but we didn't pay much attention because we thought it looked fine, however, when we changed the color palette, some things changed. We would have liked to do something more besides the stamina bar, but we couldn't do it because of time, but we are happy that many people like that mechanic ^^
Your game is good too!