BetterHeliCoronas comes with an .ini file where you can change corona radius, alpha (transparency) and some kind of reflection (I can\'t figure out what it does — set to 0 to disable or to 1 to enable. If anyone figures out — leave a message in comments).
BetterHeliCoronas_sa — standalone version, doesn\'t stay in memory, just reduces corona size to the same as in screenshot.