Not sure if this topic has been covered here before, but it occurred to me in relation to my finally getting around to building that 1/12 Tyrrell P34 kit I've had for about 40 years.
Tyrrell seemed to have a clean graphic approach from 1970 through the early 80's, when sponsorship needs led to some less tidy schemes. I've read that the yellow stripe on the P34 was a gesture towards trying to get Renault power, which might not have been farfetched given their prior Matra and ongoing ELF relationships. Was their packaging an in-house effort, or something that reflected a sponsor driven evolution in the sport following on Lotus' bringing in their tobacco branding in '68?
The other case I remember reading about how Porsche were using a consultant around the time of the pink pig. I always thought the 908/3 cars that JW Racing campaigned had liveries that had some echo of the WW1 era German flier's markings, but I never saw any specific mention of the process or antecedents. Certainly the hippie car liveries, and the Porsche Salzburg cars seemed to have some professional graphic work.
Just thought this might be an interesting topic to hear about. Superficial from a certain standpoint compared to performance driven engineering, but iconic as our image driven world has evolved.