Alden's modified seems to only be sold through a couple of retailers as well.
Lord knows why Alden does what it does, and why they don't ask for our help.
Its the thumbs up button at the bottom area of the post. Allows you to like the post without having to write anything. Right next to the multi button. Once you have a thumbs up for a post it adds a counter and shows how many thumbs up you got.
People have tried black/color 8 in the past. The problem is that color 8 can be very dark, almost black, and then the two-tone effect is lost.