It looks amazing, well done for powering through. I agree single-colour squares are much less faff. I'll leave an idea here for you: granny squares as pixels. Let it brew in your head!
(I'm turning a Super Mario 3 sprite into a blanket for my husband with solid colour squares. The Mario itself isn't too painful, it's the background squares to make it blanket-shaped that's painful. I need about 850 of them)