WordNet sense 1 (very good):

bully, dandy, great, groovy, keen, neat, nifty, smashing, swell, corking, cracking, slap-up, bang-up, not bad

WordNet sense 2 (having desirable or positive qualities especially those suitable for a thing specified):

good

WordNet sense 3 (of something resembling a peach in color):

peachy-colored, peachy-coloured

WordNet sense 4 (being or having or characterized by hue):

chromatic