I would think maybe a red and black tape. Give you a focus point, draw attention to the treking bars, since they are different from the run of the mill drops / flat bars. I'm not personally crazy about yellow / white / light colored tapes, in my experience they get looking a bit 'ratty' fairly quickly.
On the otherhand, my best beloved insisted that I needed 'Ger-Animal tags' for adults to pick out a matching shirt and tie in the morning... (Who says you can't wear a paisly tie with a checked shirt?)
M68