var image = (ee.ImageCollection('LANDSAT/LT04/C01/T1_TOA')
.filterDate('1984-04-01', '1984-12-31')
.sort('CLOUD_COVER')
.first());

print(image)

var visParams = {
bands: ['B3', 'B2', 'B1'],
min: 0,
max: 3000,
gamma: 1.4, };
Map.addLayer(image, visParams);