Hi, new here and this is only my second year gardening so this may be a really silly question but here it goes. I've recently noticed one pea plant (laxton progress) in my garden that is a bright yellow-light green color. It's the only one out of 20-30 plants that's done this and its been like that for 2-3 days without any of the other plants showing anything similar. The plant looks healthy and produced well, it also has another immature pea growing on it that looks fine. I don't know if its some sort of disease or deficiency but I saved the seed just in case its something more interesting. Could anyone here tell me what they think this might be? thanks.