[JT the Fluffy]

Alright, first thread posting. My team came up with an idea. Instead of making two sets of bumbers, why not make reversible sleeves? Now the idea is that we build the bumpers, attatch a black cover and then apply the reversible sleeves. Now the question is (Because I can't find any threads with an answer to this) Could some black show from behind the sleeves? (Read the rules, couldn't find anything on that)