
Welcome to InkscapeForum!
Nice! Unless there's some symbolism to the blue, that I'm missing (due to having aged out of popular/modern culture, lol) I think it would be effective (not sure about profitable

) to have
any color but red. i.e. green, yellow, etc. And fortunately, being a vector editor, it's so easy to change the color quickly OH! Or maybe parody the bull, as opposed to the color. For some reason, when I looked at the blue text, I thought it said Blue Bell. Would it still be a parody, if you did Red Bell?
I don't know any way to find other artists' parodies, but you could google something like "parody" and "images". If there are other artists who pride themselves on parody, maybe they've tagged their images on gallery sites, like deviantART or flickr. Or if you want vector only, try Open Clipart Library.
(Slightly OT - I've always been fascinated with those bull images. I don't think there's any bull in the world with horns that grow straight forward out of the top of their head, like in that....trademark, I guess, or logo. Some bulls' horns grow/point straight out to the side, and some start out that way, and curve around forwards. But I'd guess that literally none are like in the Red Bull image! And that's not to mention standing upright on 2 legs, lol. But I guess it's not uncommon for advertisers not to "check their facts" before putting out an ad. I remember a TV commercial a while ago, for toilet paper that was advertised as "quilted". They had a bunch of cartoon ladies sitting around
knitting, lol, having a "knitting bee" I suppose!)