I took LokiF's health bar from here: http://opengameart.org/content/health-bar-and-heart-icon and made it longer and changed the color to red.
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I used some graphics fom it it in my game (hearth only). It is now available on Google Play Store - Goatbeard's Endless Runner:
https://play.google.com/store/apps/details?id=com.SGTeam.Goatbeards_Endl...
Game is for free, tell me if You want to be in credits, because I can update some infrmation.
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Thanks for sharing this. It is fit for my dark theme game I guess.