I’m trying to work out if you are posting these as examples of ugly graphics, or examples of acceptable graphics.Color isn't that important to me (though I tend to prefer black, silver, gray). I'm more concerned with ugly graphics.
My take is that they are all fine as standalone graphics, but the Digitech and Catalinbread designs are really hard to fit in with anything else because they use three strong colours that contrast with each other. The OBNE also has three colours, but two are related shades, and all of them are more muted, so it should be a bit easier to accommodate. Gotta have another purple pedal you can stick it next to, surely?