Ah, yes, the maestro of mutilation: Colnago. Every other maker of ugly bikes owes this storied marque a debt of gratitude. Colnago's paint schemes are the very embodiment of professional cycling, in that both are essentially big knots of revolting colors competing with each-other for your attention. And certainly no instrument--no paintbrush, chisel, nor hunk of charcoal--has been responsible for more works of fine art than the airbrush, which Colnago wields with stunning effect. In fact, in the art world the very word "airbrush" is synonymous with exquisite taste. If the technology had existed at the time, Michelangelo would almost certainly have painted the Sistine Chapel with one. Finally, each frame's top tube is graced with that delightfully whimsical image of a cyclist as seen from above. Bent over his handlebars, his shoulders hunched with effort, it kind of looks like he's vomiting.
The Fabio Sacchi Tiger Freak Bike;
and of course the Limited Edition Tricolore Dork-tacular. (As ridden by Damiano Cunego and...Gilberto Simoni.)
Lastly, I'd like to give Orbea honorable mention. While lower-key than some, this Basque collective is nonetheless an inspiring example of teamwork in the service of ugliness. They may lack the audacity of some of the other manufacturers I mentioned, but they make up for it by blending their euro-flash paint schemes with bulging, swollen, and distended tubing. The result is a kind of three-dimensional ugliness you don't really get with the other manufacturers--the vileness really pops. In fact, in some way I think Orbea represent the ugliness of the future. And like the best ugly bikes, they will stand the ugly test of time by only growing more offensive and dated as time goes on.