https://pages.htgaa.org/2026b/zia-baig/week-02-hw-dna-design/index.htmlThis design advances my Week 1 proposal for structurally coloured cellulose films. I want a black, melanin-containing bacterial-cellulose backing to deepen the contrast of a separate colour-producing layer. For this assignment, I assembled a Tyr1 tyrosinase expression cassette in Kernel. The digital construct is a proposed component for a future prototype; I have not built or tested a pigmented film (Baig, 2026; Walker et al., 2025). Kernel workspace I used the HTGAA 2026 workspace and the baig-growingcolours repository. The saved construct is named J23104-B0034-tyr1-B0015 melanin cassette. Figure 1 shows it in Kernel (Asimov, 2026).Hugoen