Add the Custom Color property for Buttons

[Moyf]

Is your Feature Request Related to a Problem?

No response

Describe the Feature you'd Like

Hi! I'm trying to move from the Buttons plugin into MetaBind.

Most function works great! But I used to use the cutomColor and customTextColor properties in Buttons to modify the button's colors, however, MetaBind doesn't support it for now.

I know I can use the class to change it ,but in that way I have to create many css snippets - just to change the color. And this is not very convinient, especially when I just want to modify a single button.

So, could you please consider adding the color-background and color-text properties for MetaBind's Buttons?

Additional Context

↑ what I can easily achive in Buttons Plugin