History of Colour::label 1 change

In crates/hub/src/diffusion.rs, lines 444–453 on 2f79b17e089af898bccb1236755e2c88c5868fac7edd5b4f5802c4544d1d3175. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 444,453:crates/hub/src/diffusion.rs.