I'd like to get a hint to identify the beautiful plant with red, green and yellow leafs in the picture below. The color of the leaves has been like that since the plant has been there (at least since June this year), so no autumn specialty. In some it had small white flowers with a yellow heart. The plant is not higher than 25 to 30 cm. There are several of them in a radius of 2 m and it seems that their root-system is connected. At first I thought this is a kind of ivy, but I couldn't find anything which is similar. 

The variety of plants in my garden and my (non-existent) experience makes it impossible for me to identify them. I would be surprised if it is a weed. Thanks in advance for your help.

*Click for a larger version*

[![Colorful leafs](https://i.stack.imgur.com/7gSi7m.jpg)](https://i.stack.imgur.com/7gSi7.jpg)
[![Colorful leafs](https://i.stack.imgur.com/eAmkWm.jpg)](https://i.stack.imgur.com/eAmkW.jpg)