An apparatus for measuring a thickness of a coating on an object, the apparatus comprising: at least one light source configured to direct light toward the object at a predetermined location (205, 215) on the object, a portion of the light interacting with the object; a detector configured to capture an image comprising at least two wavelength channels produced by the portion of the light interacting with the object wherein each of the at least two wavelength channels is a color channel; and a measurement device coupled to the detector, characterized in that the measurement device is configured to: (i) determine a relative color shift between the at least two wavelength channels of the image based on the centroid of a histogram of each wavelength channel of the at least two wavelength channels of the image, wherein the relative color shift is based on a difference between each centroid of the at least two color channels, and (ii) determine at least one of the thickness or an acceptability of the coating on the object based on the determined relative color shift, said apparatus optionally further comprising: - a display configured to display at least one of the determined thickness, an indication that the determined thickness is acceptable, or an indication the determined thickness is not acceptable, - a position sensor configured to detect that the object is at the predetermined location (205, 215). - a coating hood. at least one light source configured to direct light toward the object at a predetermined location (205, 215) on the object, a portion of the light interacting with the object; a detector configured to capture an image comprising at least two wavelength channels produced by the portion of the light interacting with the object wherein each of the at least two wavelength channels is a color channel; and a measurement device coupled to the detector, characterized in that the measurement device is configured to: (i) determine a relative color shift between the at least two wavelength channels of the image based on the centroid of a histogram of each wavelength channel of the at least two wavelength channels of the image, wherein the relative color shift is based on a difference between each centroid of the at least two color channels, and (ii) determine at least one of the thickness or an acceptability of the coating on the object based on the determined relative color shift, (i) determine a relative color shift between the at least two wavelength channels of the image based on the centroid of a histogram of each wavelength channel of the at least two wavelength channels of the image, wherein the relative color shift is based on a difference between each centroid of the at least two color channels, and (ii) determine at least one of the thickness or an acceptability of the coating on the object based on the determined relative color shift, - a display configured to display at least one of the determined thickness, an indication that the determined thickness is acceptable, or an indication the determined thickness is not acceptable, - a position sensor configured to detect that the object is at the predetermined location (205, 215). - a coating hood.