Lmao just baby pink
Let's see all the very simple characters ^^. All characters with one or max two colors! Small details like the eyes don't count. It's fine if they have a different color.
Shadow's fur is one color, and everything else is some shade/tint of red, so I think he would count here :3
blooo boye, i was kind of surprised I don't actually have any characters that are just one colour, he's the closest I've got. the ears are the only part that's not blue