Rather, they are to do with the social rules that exert such a subtle effect on all of us.

Waxes give a subtle effect, stain accentuates the grain and dye provides the most uniform colour, evening out imperfections.

You may, however, prefer a more subtle effect.

Because some flowers are still in bud while others are fully open, the variation in colour creates a deliciously subtle effect.

I arrived instantly at a more subtle effect.