[PD] Installing PD on Linux: Addons? Colors? Interface?

Hi,

Happy New Year ! :)

this is my first post to this list and I am also right at the beginning to explore PureData.

I want to use PureData as a synthesizer for sounds and I will not use the midi interface, since I have no keyboard...

I am using a up-to-date Gentoo-Linux with linux kernel 2.6.31.11. .

As a starting point I compiled and installed the vanilla-version of PureData on the system manually and it "works" (read: I was able to get a sine wave sound via alsa).

So far so nice! :)

The interface is pure black and white.

But on the net I saw wonderful colored snapshots of the interface.

Have I forgotten to install something extra, an addon for example, a plugin or...?

Thank you very much for any help in advance!

Best regards, mcc