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.

Ok there is a lot that you can do to decorate this place. You can put nice white/cream curtains along with white/cream curtains so that you can use net curtains one when you want more light. You can place a small decorative plant on that window. Another thing is that you can do is cover the wash-basin pipe. You can use a couple of small frames to hang on the wall that compliments the color of the wall. Talk to top interior designers such as Tasko. Visit:- https://tasko.in/5-top-interior-decor-trends-for-your-home-this-autumn-4/ or call Contact Animesh Sarkar – 9985509895