Don&rsquot be a square this spring. We really like this rectangular-retro take on catseye frames from Fastrack&rsquos Slims series, with gradient lenses and translucent coloured frames. Green and purple have proved sur­prisingly versatile across wardrobe options. Other shapes in the series are bright Lennon-ine round frames and a slenderised wayfarer style. (Rs 1,395, fastrack.in)