Single-shot　fabrication　of　three　sets　of　nano-scale　grating　structures　with　different　periods　is　reported,　which　are　constructed　on　a　glass　substrate　coated　with　a　waveguide　layer　made　of　200-nm-thick　indium　tin　oxide　(ITO).　Multiple　waveguide　resonance　modes　are　observed　in　the　visible　spectral　range　with　a　bandwidth　as　narrow　as　10　nm.　Angle-resolved　tuning　properties　of　these　resonance　modes　enable　simultaneous　three-color　optical　response　of　the　nanodevice　to　cover　the　whole　visible　spectrum.　This　implies　very　simple　methods　for　the　potential　design　and　realization　of　flexible　optoelectronic　devices.