Yes I was right! Though I named it wrong. So blue is bl'bl or right?I actually forgot what it meant (shame!) so I went and looked it up.
It apparently means that the gene is co-dominant with what is usually considered a dominant trait. Co-dominant genes are like black and splash. (Another term commonly confused with it is "incomplete dominance." Incomplete dominace is two different alleles of a gene both expressing themselves, as in AB blood type—the person has both A and B blood.)