Swatches not showing on csv import

I tried importing color swatches with csv file as

{“Colour”:{“name”:”Colour”,”type”:”color”,”terms”:{“White “:{“name”:”White “,”color”:”#FDFEFE”,”image”:””,”show_tooltip”:””,”tooltip_text”:””,”tooltip_image”:””,”image_size”:””}}}}

where i put my color name and code on respective places but swatches not showing on single product page.
Not sure, if i’m doing something wrong or need to change some settings. Need help!!