sentences:  These changes in colouration may be due to changes in seasonal temperatures as sometimes leafhoppers who mature in colder spring temperatures also show darker colouration like that of winter leafhoppers.Some researchers believe that these changes in colouration occur according to the surrounding temperatures of the last leaf hopper instars as this is the stage during which wings develop.This may also be backed by the fact that adult leaf hopper do not change colour once they have matured regardless of the temperature of their environment.