@servicioexpreso: Hello there,

A) If you want to have CPT in widgets you can have that by using Essential Content Types Plugin. There are widgets for every CPT Type that you can use.

B) Can you clarify which option you are referring to?

C) Can you clarify which tags you are talking about? Please post in your site URL so that I can help you change the color.

Let me know if this helps you out!
Kind Regards,