Endermen don't be red when taken damage by rain.

Please force a crash by pressing F3 + C for 10 seconds while ingame and attach the crash report here.

Your Java version is out of date. Please update your Java to the latest version (1.7.0_25): http://www.java.com/en/download/. Keep in mind that when using a 32-bit browser on a 64-bit OS the automatic version detection will only show the 32-bit version of Java, the 64-bit version needs to be downloaded manually: http://www.java.com/en/download/manual.jsp.
Please report if the issue persists with the latest Java version.

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Cannot confirm.