Tried various microbee versions (under emulation), found that the Premium produces the correct colours.
Bugs:
When a boulder should land beside you, it can just disappear instead.
On level 2, the fireflies are just the letters p,q,r,s in sequence. I assume they should actually look like flies. Oh, it's like that in your screenshot.
Bugs:
When a boulder should land beside you, it can just disappear instead.
On level 2, the fireflies are just the letters p,q,r,s in sequence. I assume they should actually look like flies. Oh, it's like that in your screenshot.