Masonry Walls and Ceilings. Interior masonry walls and ceilings above grade may, in general, be painted in much the same manner as plaster surfaces. Here again, it is necessary to allow adequate time for the masonry to dry before applying paint and, in addition, attention should be given to the preparation of the surface. When decorating a wall containing Portland cement (concrete, for example), it is essential to take precautions against the attack of alkali. For this purpose, alkali-resistant primers such as rubber-base paints may be used when oil paints are to follow.
Matt - Describes paints that give a flat, non-reflective finish. It is ideal for walls and ceilings that are not perfectly smooth.
Cold water paints of the casein type may be applied either directly to a plastered surface, or the surface may be first given a coat of primer-sealer to equalize uneven suction effects. The same is true of resin-emulsion paints, with the recommendations of the manufacturer of the product being given preference in case of doubt. Since resin-emulsion paints usually contain some oil in the binder, they should ordinarily be applied only to plaster which has dried thoroughly.
By licensing these names, paint companies and retailers are taking advantage of the popularity of these well-known brands to attract you to these paints; that way they don't have to use obnoxious colors to bring your attention to their color wheel. If you look at the colors in these displays you will notice that they are generally missing those bright, saturated tones. Instead, most of the colors are more neutralized. Naturally, these colors are much more attractive to paint on a wall in your home.
By far, the most important characteristic in determining whether you are Warm or Cool is your hair color. If you can't determine your exact eye or skin tone, then your hair color will provide the answer. Why? It frames your face!
Use Plain White Primer for Light Paint Colors. In our first case, if you decide to paint a wall in your house with a light yellow color, but the wall is currently a deep dark brown, you will go through bucket after bucket of paint trying to cover that brown, easily doing 4 - 6 coats or more. But if you put down a coat of white primer first, you could be done after 2 coats of paint.
Sadly, not only are people more attracted to the paint color wheels because of these colors, but beginners are more likely to find one of these bright, saturated colors most attractive and end up choosing one as their new paint color. Unfortunately, for most of the reasons discussed above, those colors look ridiculous painted on walls.