That one seems to be called IC4210, it was discovered on 13th March 1785 by William Herschel, and so it has a german wikipedia page but not an English one: https://de.wikipedia.org/wiki/IC_4210

It is a "starburst galaxy" which means it is undergoing a lot of intense star formation, I think that's why it has pretty colours from all the gas clouds and activity: https://en.wikipedia.org/wiki/Starburst_galaxy