I'd just like to comment:
I bought eComstation 2.1 some couple of years before ArcaOS. When I eventually got ArcaOS, the first thing I did was migrate eSchemes and a few other programs that came with ECS - although if I recall correctly, it's called ThemeMGR in the installation files. For any who may be curious, it's worked perfectly for me across multiple releases of 5.0.x and now 5.1.
I believe AN is making use of a restricted version of eSchemes/ThemeMGR in order to get the look and feel that we have in ArcaOS, the dependencies are all there and usage of this program in the ArcaOS environment is way too simple for me to assume otherwise.
With all this being said, I don't think ECS can be bought anymore and even if it could be, it's probably not worth spending upwards of 100USD for a theme manager.
I tried to update my NeoWPS registration from Mensys. Everytime it said an email was sent, I never received it. I beginning to wonder if the US government is blocking it. Buying software from Russia is becoming impossible.
The Mensys website has been gradually decaying for some time, I wouldn't be surprised if their mailer is acting up at this point.