1) Neither the colour nor the shades have changed.
2) Neither the colours nor the shade have changed.
3) Neither the colour nor the shades has changed.
4) Neither the colours nor the shades has changed.
5) None of these
Rule ⇒ If the subject is made up of both singular and plural words connected by or, nor, either …. Or, neither … nor, not only … but also, the verb agrees with the nearer part of the subject. In the sentences of the type: “Neither _____ nor _____” OR “Either _________ or ______” The verb always takes the form of the subject closest to it. That is, in sentence “Neither A nor B …… (verb)”, the verb will take the form in relation to B because B is closer to it and A will be ignored. So if B is plural, verb will be plural (e.g. have) and if B is singular, verb will be singular (e.g. has).