Have you grown tired of that red room which has proved to be more gloomy than cosy? Or has your son or daughter decided purple is no longer the colour they want in their bedroom and are looking for something more upbeat?
Well masking these strong colours can be quite a challenge and involve several coats of your chosen, and possibly expensive, replacement.
My advice therefore is to use a cheap white emulsion for two or three coats before you start applying your new finish. Alternatively, if you’re going for a darker shade on what was previously a pale colour a darker cheaper paint will provide a good base.
This applies to your trim colours too – doors and skirting for example.