Since you've tried the over the counter method, I would agree with Bobbi. Hire a pro. Those sinks are so pretty refinished to their original state and a pro will give you a finish that will last the rest of your life. If you can't find anyone listed in the phone book, ask around at a hardware store.

I faced the same issue when i brought a new house and had to use my old double door refrigerator. The refrigerator was white in colour but after 6 years of usage it turned yellow . I simply brought a 700 Rs decal sticker from aliexpress and voila its turns out really well for my house. Attached some pictures for your reference. Now talking about the almirah i would have painted it some bright neon colour or maybe matt black ( colour depending on what would look good in your house ) to make it the show stopper of the house. Good luck and post pictures once its done!!

1) make ceiling plane cos fan nt look in centre 2) remove yellow & green curtain make it white 3) pest some dark brown design on cupboard 4)make all paint white cos u have too many colours in small room

that is what i have added if you can see the pic above.. want some suggestions on partition that i can use between dining and sitting