I'm not aware of any, except maybe some of the old ones by Chad and Victor on YouTube. (I really need to get on that bandwagon. All my tutes are basically in text and pics form in this forum, and even I can't find most of them.)
Anyway, I can offer some tips:
Custom Styles are like presets you create in the Style window. These Styles are independent of the Shapes you can apply them to, and you can use them over and over again. When you edit a Custom Style, the changes appear in every shape that uses the style.
After you apply a custom Style, you can still change specific Style properties for that shape. For example, you can apply only the custom Style's stroke properties but change the fill for that shape. (This is what I was talking about earlier.) Or, you can apply only part of a Style...for example, the line thickness of a Custom Style but not its color. It's a very flexible system once you get the hang of it.
To create a Custom Style, look under Styles in the Styles windows and select New. (In Moho 14, you will notice that several Custom Styles already exist there. These are mostly 'brush' styles. You can create and save your own global Styles in your Custom Content folder.) After creating the Custom Style, you can set the properties for that Style. When you're done, it's ready to be applied.
To apply the Custom Style, you need to select the Shape using the Select Shape tool, as normal, but instead of editing the current Style directly, you choose the Custom Style from the Style 1 or Style 2 menus. You can override the Custom Styles settings in the normal place above. For example, you might have a Custom Style that applies a certain line weight or brush style, but you want a different color. There is no need to change the Custom Style; you can just change the color here.
As you may have guessed, you can apply and stack two Custom Styles to a shape. When you use both slots, you can still make unique changes at the local level for the shape.
If you have the style applied throughout the drawing, you can change any of the properties all at once by selecting the Styles from under the Styles menu in the Styles window and changing it there.
In short, the main Style window is normally used for local shape edits, and when you select a Custom Style, it's for making global edits.
Bonus Tip: If you're using Custom Styles for a character, but you want to make variations for multiple copies of the character, use Import to import the character and rig and enable Unlink Shared Styles. This keeps the Custom Styles for the imported drawings but sets a unique Style ID for its Custom Styles. For example, I might use this technique to create many differently colored cats, like in the Boss Baby scenes on my demo reel. (Actually, for that Boss Baby example, I did that the hard way by editing the Style IDs from inside the project's code, but afterward, Chucky and Mike told me about the Unlink Shared Styles option, and I've been doing it that way ever since.)
There's more you can do with Custom Styles and it's best to learn that through experimentation. The above info can get you started.
IMO, Moho's system is not as flexible as using nodal texturing systems found in some other animation packages, but it gets the job done directly and efficiently. And it's surprisingly flexible in its own way once you get the hang of it.
Hope this helps.
