colourless

adj.

[1]	pale , colorless , pallid , blanched , white , wan , ashen , sallow , waxen , sickly , washed out
[2]	dull , colorless , drab , uninteresting , vacuous , vapid , lifeless , boring , tedious , spiritless , dry , dry-as-dust , dreary , characterless , insipid , bland , namby-pamby , lacklustre , uninspiring , uninspired