Greys have a dominant character that will gradually take over the variety and is best avoided if you are to keep the wings free of heavy markings. Using the Cinnamon in your pairings will reduce wing markings, but at the same time it will drain the body colour. The basic material is of extreme importance in all your pairings if you are to achieve success. Poor body colour can again be traced to the indiscriminate use of birds, which lack depth of colour. Many fanciers are of the opinion that if they pair their Sky's to Cobalt, or Light Green's to Olive they must improve the body colour of the Skyblue or Light Green.
Nothing can be further from the truth.
The Development of Colour in Budgerigars writes about understanding how pigments are distributed and how the mode of distribution affects the depth of colouration. He states, the fact must be recognised that the affect of any reducing agent depends largely upon the amount of material it has to work on and there is no greater amount of black pigment in an Olive than is found in a Light Green. The old paint box theory of colour production will have to be discarded, because by pairing a dark factor to a light factor you will not necessarily improve the body colour of the light factor bird. The basic material must be good to start with and any dark factor used needs to have a strong body colour for its variety, if it is to give any help to the poor body colouring of the lighter bird. The exhibitor must make the judgement from the stock available at the time from their aviary and the overall balance in size, type and contrast should always be uppermost in their thoughts if they are to compete on the show bench.