I get a daily email from Mission Network News. Several weeks ago there was a story about Gospel Aprons. I looked into it an sent for a kit to make two. I finished one of them this afternoon. If you're interested here's the link.
What the colors represent:
Black--Our sin that separates us from God.
Red--Jesus blood shed for forgiveness of sin.
White--We are washed whiter than snow by the blood of Jesus.
Blue--The Holy Spirit
Butterfly--The transformation that takes place when we become new creatures in Christ.