Paint and curtain color for the wall

The best combination for your green floor is yellow or rust gold curtains. If you really like it to look more brighter and bigger,go for white with some print or striped with yellow and blue (use only pastel colors for small rooms) Make sure your ceiling is off white or gloss white. Just my suggestion

My personal favorite color is Sandcastle by Dun & Edwards. You can go onto their website to view the color and can order a chip that will come in the mail. I painted a house that I sold in that color but when I moved to another state, they didn't sell Dun & Edwards paint. I ordered the chip and matched it. I would use cream colored or a crisp white colored curtain along with it. Good luck

You can either choose matching shades - pale Apple Green for the walls and a matching but slightly stronger shade for the curtains (this will tend to reduce the strength of the green floor tiles) or you can choose complementary colours - the exact complements of green (depending on the shade) would be lilac, red or orange. This would give a very bold and striking colour scheme but would be difficult to carry off successfully. Again, depending on the colour of the floor tiles, you might choose the more muted and 'earthy' complementaries of brown to buff. Often it depends on what purpose the room has. If you want a restful feeling, then I would definitely recommend staying with shades of green (with walls so light that they might almost appear white) and the curtains just a little more definite green but still quite light. If you then needed accents, I would choose natural woods and, perhaps a small splash (in the way of ornaments or scatter cushions) in a stronger, contrasting colour.

A pale lilac if you want to be tasteful, or bright orange if you can stand it!