I've already done this theory but they were all spread out over many theories! I'm bringing them together now!
As seen in the Sky Arena, the diamonds are represented by diamond shapes with colors that match whatever diamond they are. Peridot's ship has a blue, yellow, and white triangle which matches the colors of the the Sky Arena. This shows that there was a blue and white diamonds as well as yellow and also that Homeworld still respects those diamonds. The only one missing is pink. Rose's door has a pink triangle, her shield has a pink triangle, and her flag has a pink triangle. It would make sense that after her rebellion, the new ships wouldn't have her symbol. This is more evidence of the Rose Diamond theory.
VOUS LISEZ
Steven Universe Theories (Continued)
DiversosThis goes along with my previous theories! I hit the limit on the other book.