I must finish these crude notes about general colour by reminding you that you must be moderate with your colour on the walls of an ordinary dwelling-room; according to the material you are using, you may go along the scale from light and bright to deep and rich, but some soberness of tone is absolutely necessary if you would not weary people till they cry out against all decoration.  But I suppose this is a caution which only very young decorators are likely to need.  It is the right-hand defection; the left-hand falling away is to get your colour dingy and muddy, a worse fault than the other because less likely to be curable.  All right-minded craftsmen who work in colour will strive to make their work as bright as possible, as full of colour as the nature of the work will allow it to be.  The meaning they may be bound to express, the nature of its material, or the use it may be put to may limit this fulness; but in whatever key of colour they are working, if they do not succeed in getting the colour pure and clear, they have not learned their craft, and if they do not see their fault when it is present in their work, they are not likely to learn it.

Now, hitherto we have not got further into the matter of decoration than to talk of its arrangement.  Before I speak of some general matters connected with our subject, I must say a little on the design of the patterns which will form the chief part of your decoration.  The subject is a wide and difficult one, and my time much too short to do it any justice, but here and there, perhaps, a hint may crop up, and I may put it in a way somewhat new.

On the whole, in speaking of these patterns I shall be thinking of those that necessarily recur; designs which have to be carried out by more or less mechanical appliances, such as the printing block or the loom.

Since we have been considering colour lately, we had better take that side first, though I know it will be difficult to separate the consideration of it from that of the other necessary qualifications of design.

The first step away from monochrome is breaking the ground by putting a pattern on it of the same colour, but of a lighter or darker shade, the first being the best and most natural way.  I need say but little on this as a matter of colour, though many very important designs are so treated.  One thing I have noticed about these damasks, as I should call them; that of the three chief colours, red is the one where the two shades must be the nearest to one another, or you get the effect poor and weak; while in blue you may have a great deal of difference without losing colour, and green holds a middle place between the two.