Colouring dropping samples

<img width="846" height="382" alt="Image" src="https://github.com/user-attachments/assets/d8ab1d06-49b2-495c-b2c4-31171beb79ae" />

When trying to visualise groups in my samples, groups 33 through 48 do not show colouring despite labelling in the colouring section. Tried rerunning, same groups drop out in colouring. 