Sorry but Senna didn't exactly do much more on a Williams than have the fatal crash.
When everyone thinks of Senna and Williams, they think Imola. Almost like the only thing he ever did in a Williams was have a fatal accident. He still drove 2 races, albeit with poor results. I don't look at the new Williams scheme as a bad memory, but a good one. With the connotation of Senna, and the WC's for Hill and Villeneuve. I think hugo thinks the scheme reminiscent of the 1994 car, with a Brazilian driving, is a bad connotation.
Whenever a Brazilian sees that Rothmans livery, it's the first thing that springs to mind.
Even when I watch old 500 races with the Rothmans Honda, my first reaction is a negative one...