@Valyar,
I talked to the Conan ruleset guys; and they were considering re-introducing custom sidebar code to support sidebar icon art. However, I warned them that they would need to be fully responsible for maintaining the custom sidebar code, responsible for any CoreRPG incompatibilities, and that we would remove theme support from Conan (to prevent average user from coming to support about why themes "didn't work"). They are considering still, but I recommended against it as it will take more of their time to develop and maintain, as well as having less compatibility with CoreRPG changes in the future.
Regards,
JPG