Colour support in RSpec 1.3 with Spork


I can’t find any reference to this being a known issue or not. I’m
having to work on a Rails 2.3 project for a bit, so I’m back with RSpec
1.3. I’ve got Spork working and I’m running it with this command:

ruby -S spec --drb --colour --format progress -o spec/spec.opts …

But I only get a monochrome output. Any idea what might be going on?

Thought I’d ask here as it seems more RSpec- than Spork-based.