Dubbing his show “Afro Summer,” Burrows hewed to a beachy theme — full khaki skirts with red piping, sheer cotton polkadot shirts — that had immense wearability but were decidedly low-key. The real fun came with his finale showstoppers, including a series of floor-grazing gowns in pop colors, from the lemon yellow chiffon paneled dress to a hot pink draped jersey number.