The top/side of a PC tower. The top is very brownish-yellow, the front is slightly yellow, and the side is still beige https://digipres.club/system/media_attachments/files/112/040/171/716/415/865/original/086adeef58823ad0.png
Fun thing from that rusty server:You can see how the three parts of the case have yellowed differently over the last 30ish years. The metal side panel is fine, the front panel has lightly yellowed, and the top lives on in the sun