How do i get dark brown BC? Is dark brown another one of those colours you need to add a lot of colouring to? (Like red and blacks).
I added some cocoa powder...about 3/4 cup or slightly less...and then some Wiltpn dark brown...but its still a light shade...will it get dark overnight you think?
Im looking for a rich dark chocolate brown colour.

I use Hershey's Dark cocoa powder when I need a dark brown. Works great . HTH

Use americolor brown, once you try them you will never go back to wilton.

I used Wilton Brown with a touch of Black and a little Christmas Red to get this shade...

I'm like jaybug, I use Hershey's Special Dark cocoa powder

Yeah, I agree with the other suggestions so far - I use mostly the Special Dark cocoa powder to get the darkness I'm looking for, then add some red or orange to bring out the warmth I want since straight cocoa powder is sort of a dreary, desaturated brown. Also, definitely go with Americolor. I'm slowly transitioning from Wilton as I run out of each color and I'm always thankful when I need a color that I don't have in Wilton. I hate toothpicks.