A webpage can be revitalised with the use of colour alone. It may seem far fetched but focusing on what colours are used on a website, trying different combinations and experimenting, will inject a shot of design efficacy into your site.
A great place to start experimenting is by using a colour wheel,
The Colour Wheel
The colour wheel contains the full spectrum of colours arranged into a format which shows the way the colours interact with each other.
To use this in web design try picking the complementary colours from this and using them in and around the webpage.
Complementary colours are diagonally opposite one another on the colour wheel. These colours will contrast with one another sharply, drawing the eye towards them on a webpage.
There are many other colour relationships that you can discover using a colour wheel. The effect that colour relationships have has a deep artistic history behind it. Add that same depth to your webpage.