When I push Ctrl-+ and font gets larger, they also obtain slight yellow spots and marks all over the letters. It might depend on the monitor but consider these screenshots anyway:
http://ompldr.org/vYWpjMw//home/bz/pic/ ... t-font.png
http://ompldr.org/vYWpjNA//home/bz/pic/ ... -large.png
I tried all Xft.rgba options, all hintings and lcd filters in my ~/.Xdefaults, but the problem remains. What is weird is that changes to ~/.Xdefaults affect other programs, e.g. emacs but do not affect Sublime Text 2.
I'm using ArchLinux, Sublime Text 2 (build 2111).