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 think all white will be a very nice scheme and the differences in the white will just add subtle difference. In the above pic the walls are more white than the table, but mixing with the light tan colours and greyish tones makes this gradient of whitish tones work well.This room is all white as well with the furniture and walls, but adding the punch of the other colours masks if the whites are slightly different as the bright colours become the focus. The walls in the pic below 'read' a very pale grey so that would be an option, just ensure that it is a whitish-grey and not muddy or warm. I would choose the sofa colour as your main colour and accents to match from there.

I am thinking of using pastel light green colour for walls of our dining area. Since our living room is continuous with dining area, what should be colour for living room as I am not too sure if same colour across will look good. I am thinking of using olive green or rose gold dining chairs and warm white light on ceiling. Size Living room..10*9 Dining+lounge 18*8 ft

Lighting is both warm and white, will this color be too dark ? My living room does not get direct light bit has enough natural light. Is this color dark for a living room. I was trying to match sherwin williams evergreen fog