Mysterious yellowing flower??

[Mareya]

Last year, I randomly received a mini phal for my birthday. She was white with purple veins! She was my first orchid so I just did the bare minimum. Watered it every week and kept it near indirect sunlight. Eventually, the blooms fell off and the stem even died back and I started paying less attention to her (but I made sure she was still living lol) but when a flower spike emerged last winter, I got really excited so I started researching orchid care. I repotted her and used a mist fertilizer weekly and made sure she was very happy! fast forward a few months, I decided to buy three more phals because I’m SO obsessed with them now. She recently bloomed but the curious thing is, she’s...yellow? Her roots and leaves are in perfect condition but the color of her flowers are really throwing me off. I accept her beauty nonetheless, but I’m confused to why she suddenly decided to be a different
color? Was it the fertilizer or the weather?? Let me know what you think! Unfortunately I don’t have any pictures of her from last year so you can’t compare the color but here’s what she looks like now! Just imagine the petals to be white and that’s exactly what she looked like last year
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[Mareya]

here’s the picture! I had trouble figuring out how to upload tgubgs yesterday oops
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[Sheryl]

Maybe someone will have an answer for you but I wanted to comment on how pretty the flower is Mareya! Nice job!

[Azizan]

Maybe it is not truly white in the first place, perhaps light yellow-almost looked like white. Sometimes Phalaenopsis colour fades as the flower aged. Different cultural condition also could affect the colour.

[Dorsetman]

Have you been puttingout a saucer of cream each night for the fairies ? I can't think of any other explanation.