I am helping out a company (company A) to create marketing materials for another company (company B, a client of theirs) to present to company B’s board and I don’t know how to design these materials.
Do I use company A’s style guide which makes it look like it’s from us?
Do I use company B’s style guide which makes it look like it’s from them to their own board?
Or some sort of third option mashup or totally different font, identity, color scheme etc.?
Any help would be really helpful.