May you explain your question a little bit better?
Soprano
mezzo-soprano
alto
tenor
bass
baritone
GOUACHE is watercolor that has been made opaque by adding inert white pigment to it.
Further expounding this, it is commonly diluted with water before being applied to paper. However, Gouache is opaque in its natural state. It becomes translucent when a larger amount of water is used to dilute the paint.
Body colour is the use of opaque colours for highlights or dense flat areas and is a technique which has been used in water colour for centuries.
Answer:
First have a little talk with them and they'll tell a little explanation
Explanation:
Then you try to explain it how he explained it and now do it how you guys explained it to each other