I also tried BURG with Chakra awhile back... I don't recall which theme it had by default, But I do recall that it was easy to change once I located the right utility.
I think I ended up with one similar to the second screenshot... I thought it was very cool that (depending on settings) it would condense all entries for each OS under a single icon; it made for a much cleaner looking menu.
I also recall that it took some searching to find the config file to change the boot menu..
(they have a pretty good auto-detect script for different os's/distro's/kernel's.. ..it found more than I wanted on my menu!)
My "notes" are here:
I found the Arch wiki page on Burg very helpful:
Initially I was trying to reduce the number of OS boot options and couldn't find the correct file (.. it is /boot/burg/burg.conf ..it is populated by running the command burg-mkconfig -o /boot/burg/burg.cfg ). After reading the wiki I figured out I could "fold" the multiple entries for each OS / Distro into a single icon with a simple keystroke at the boot menu.. very nice!