I like the 1020 yellow with the matte feel and black accents , the 1520 in matte yellow is also very nice , the black icon looks great , the blue 620 , the 920 in red was lovely , I just wish they done a matte red
I also like cyan and wish they used it more a 1020 in matte cyan would be my choice and I am sure the icon and 1520 would look rather good in matte cyan too
if I had to add colours id like used more it would be matte cyan and matte lime green ;-)
I do like the Lumia design and colour options but the htc blue also looked very nice too ;-)