The Collaborative International Dictionary of English v.0.48:

Splashy \Splash"y\, a.
   Full of dirty water; wet and muddy, so as be easily splashed
   about; slushy.
   [1913 Webster]

WordNet (r) 3.0 (2006):

splashy
    adj 1: characterized by water flying about haphazardly
    2: marked by ostentation but often tasteless; "a cheap showy
       rhinestone bracelet"; "a splashy half-page ad" [syn:
       flamboyant, showy, splashy]
    3: covered with patches of bright color

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "splashy":
   aquatic, aqueous, brave, bravura, braw, chichi, daring, dashing,
   dirty, dressy, exhibitionistic, flamboyant, flashing, flashy,
   flaunting, frilly, frothy, gallant, gay, glittering, hydrated,
   hydraulic, hydrous, jaunty, jazzy, liquid, miry, mucky, muddy,
   oozy, ostentatious, peacockish, peacocky, plashy, pretentious,
   rakish, showy, slabby, slobby, sloppy, sloshy, sloughy, sludgy,
   slushy, snazzy, soft, splurgy, sporty, sposhy, squashy, squelchy,
   squishy, swank, swashy, turbid, waterish, watery