The wall you painted looks beige. Do you have that color anywhere else in the room? Looking again, it looks like it may be in the placemat? If a color isn't repeated it normally looks like a mistake. Honestly I'd keep all the walls the same color. I like the sheer white curtain idea and agree with phuninthesun about how to hang them.

Post a picture of the room.

OK...oil based poly STINKS for WEEKS afterwards. And it turns the 'orange yellow' you are describing. And it will turn ANY COLOUR you choose to an orange tone. If you like the idea of the finish off-gassing for 30+ days while you try to find a place for yourself and kids and dog to live, you are welcome to go with it. I'm not a fan of oil based. The VOC contents are ASTRONOMICAL (880 g/L in one of them...compare that to the CARB requirement of LESS THAN 175 g/L in California). Many of these finishes are illegal in California and the 11 states that have adopted the CARB II indoor air quality requirements. It is a myth that oil based finishes are TOUGHER than water based. Polyurethane is polyurethane is polyurethane. The issue is when you go for the same PRICE TAG as the oil based finishes. A low-priced oil based finish (that has been on the market since the 60s without so much as a PRINTING up date on the can let alone a recipe change) is DIRT CHEAP. Why? Because those companies made their money DECADES AGO. Now they are just enjoying the HORDES of money from the investment they made in the 1950s (nope...not kidding). If you get a 'dirt cheap' (aka DIY level product from Home Depot!!!) water borne poly you will get what you paid for = a DIY level finish that is not as tough as the toxic stuff from the 60's. The TRICK is to work with HIGH PRICED water based finishes. The stuff that comes in 2 part products (call the finish and the hardener/catalyst). They carry big names like Bona or Loba. They carry high price tags (like double or triple the cost of the toxic stuff). They also carry VERY IMPRESSIVE wearability. The big boys from the big boys (Bona Traffic HD or Loba 2K Supra AT) are the toughest finishes outside of a factory. They are MAGNIFICENT. The PROFESSIONALS that work these finishes are the best of the best as well (or should be...some hammer swinging 'guys' give it a go once in a while and it shows...). And those people are not CHEAP. Why? Because they took the time out of the schedules and money out of their own pockets to attend the 3-5 day training courses for these finishes. Only the DEDICATED do that. Everyone else just looks it up on Youtube. My quest to you is: How happy would you be to find the house unlivable for as many as 30 days because of the stench? Are you a migraine sufferer? Do you get nose bleeds? How about your kids? Does anyone in your family have 'sensitivities', allergies, asthma, COPD, etc? If anyone has any of these things I've listed, then oil based is out. I've seen people get nose bleeds from sleeping in a home with freshly finished floors with oil based poly. Some vomit. Most have BLINDING headaches. Migraine sufferers can't go further than the front steps...the smell stopping them from entering the house. Just because it says 'can be walked on' in 1 day and furniture back in 5 days...doesn't mean the SMELL is gone.

I would make a decision about what is going to happen with the rest of the house in 2022. If you decide not to replace the floor next year, then try to match the kitchen to what you have in the rest of your home. If you decide to replace the flooring in your home in 2022, just put something inexpensive and easy to remove (sheet vinyl??). And then replace it all next year. Don't try to hang on to the kitchen flooring just because it is new.