Colour.
drawing of a design on the material, scarcely comes under the head of Colour, though, as aforesaid, some very beautiful work has been done in this way.
As regards method of colouring, it is not very possible to give much indication of what to use and what to avoid, it being greatly a matter of practice, and somewhat of instinct, how to unite colour into beautiful and complex groups. A few hints for and against certain combinations may perhaps be given: for instance, avoid placing a blue immediately against a green of nearly the same tone; an outline of a different colour disposes of this difficulty, but even so, blue and green for equally leading colours should be avoided. Again, red and yellow, if both of a vivid tone, will need a softening outline; also, I think, red and green if at all strong; avoid cold green in
