Comment on 6th Doctor - The Ultimate Adventure by fourth-heir
What cat pin did you base this off of?
I read somewhere that fans had sent Colin many cat brooches over the years and that he'd shown his gratitude by wearing a different one on stage each night with this costume so I took the opportunity to design one of my own.
I had heard the same, and had even seen a few online. It's funny, I always wanted to make Colin a custom Cat Brooch myself, basically just one where the cat is wearing 6's coat...
Somewhat like this? 
steveandrew.deviantart.com/art…
steveandrew.deviantart.com/art…