You can improve RAM management even more by removing following line from the build.prop:
Tests show that battery doesn't suffer much by normal usage, but of course when this limit is removed, you can open "unlimited" of apps, which will drain your battery fast.
I must agree that those new colors looks awesome.
Honestly I wish 1+ sticked with an IPS LCD screen or get something cool like IPS NEO then Amoled. I like amoled, but then a pentile display could easily go to 1440p with hardly any compromise to battery life. Plus I like sharper text.
sRGB looks better than original. Also, about the ram management, they should allow people to change the ammount of apps that stay opened at one time without rooting the device. Even my older phone with 2GB ram could have more apps running than 1+3 with 6GB.