Certainly. Microthemer creates just one new table as you’ve mentioned: wp_micro_revisions. It also creates a few table rows in the wp_options database (microthemer_ui_settings and preferences_themer_loader). Finally, it creates the following folder on the server: /wp-content/micro-themes/. It places a number of files and subdirectories in this main folder as you apply new styles and create design packs.
I think that’s everything. If you want to query anything when browsing your security logs feel free to write back here any time.