N trophy, medal, prize, palm, award, laurel, laurels, bays, crown, chaplet, wreath, civic crown, insignia, feather in one's cap, decoration, garland, triumphal arch, Victoria Cross, Iron Cross, triumph, flying colors, monumentum aere perennius, for valor.

Ostentation

N ostentation, display, show, flourish, parade, etalage, pomp, array, state, solemnity, dash, splash, splurge, glitter, strut, pomposity, pretense, pretensions, showing off, fuss, magnificence, splendor, coup d'oeil, grand doings, coup de theatre, stage effect, stage trick, claptrap, mise en scene, tour de force, chic, demonstration, flying colors, tomfoolery, flourish of trumpets, pageant, pageantry, spectacle, exhibition, exposition, procession, turn out, set out, grand function, f=ete, gala, field day, review, march past, promenade, insubstantial pageant, dress, court dress, full dress, evening dress, ball dress, fancy dress, tailoring, millinery, man millinery, frippery, foppery, equipage, ceremony, ceremonial, ritual, form, formality, etiquette, puncto, punctilio, punctiliousness, starched stateliness, stateliness, mummery, solemn mockery, mouth honor, attitudinarian, fop, ostentatious, showy, dashing, pretentious, janty, jaunty, grand, pompous, palatial, high-sounding, turgid gairish, garish, gaudy, gaudy as a peacock, gaudy as a butterfly, gaudy as a tulip, flaunting, flashing, flaming, glittering, gay, splendid, magnificent, sumptuous, theatrical, dramatic, spectacular, ceremonial, ritual, solemn, stately, majestic, formal, stiff, ceremonious, punctilious, starched, dressed to kill, dressed to the nines, decjed out, all decked out, en granite tenue, in best bib and tucker, in Sunday best, endimanch_e, chic, with flourish of trumpet, with beat of drum, with flying colors, ad captandum vulgus, honores mutant mores.

For further exploring for "flying colors" in Webster Dictionary Online