So many grays turn blue. after much trial and error for bdrm, bath and water closet , i'm happy with Benjamin Moore Horizon and Behr ultra in Burnished Clay. Neither look great on the card but they dry to a soft neutral gray. worth getting samples to try.

I would use the greens from your bedspread. Since you have green in the bedspread, and brown and white tiles, those 3 colors need to be your focal point. So I have painted your wall a bright olive green ( the darker color in your bed spread) and the ceiling either a brown to match the tile or a white to match the rest of your ceiling. then or I think this last one is a little tamer . But you should be able to paint over the tile. WHAT kind of tile is it? If it is ceramic you can paint it. Here is a link about how to do it: https://www.sherwin-williams.com/property-facility-managers/education/styles-and-techniques/sw-article-pro-resuscitateold.html

I would say at present your room is too crowded. also too bright /shiny colors. In India large / wall to wall rug/carpet can be problem with dust so a small cotton rug/carpet/dhurrie would help you. Also as Celerygirl mentioned please remove those sofa covers. add few cushions with nice cotton covers (ikat/block printed covers are quite cheap and easily available online) Get simple cotton/ or mixed curtains. Some wall art/framed posters /photos would be nice on walls. Also sheet on the diwan should match the color of your sofa.

Somin kumar, What you can do is send the layout on this wall and we will provide you the best possible solution. Tentatively you can have a platform on the 6' wall with 21" depth do you can provide 16" deep baskets and one full height cabinet which can accommodate your microwave and other utilities. You will get around 42" of platform for hot plate, a sink etc.