I'm not sure specifically which 'dil ruba' story you are referring to. There could be many stories, characters, or works with that name. Can you be more specific about what kind of 'dil ruba' it is? For example, is it a name in a particular book, movie or cultural context?
The JoJo manga is mainly in black and white. Colored versions exist but are not the norm. Sometimes, colored illustrations are done for promotional purposes or by fans.
I think it's great. The characters are memorable, the plot is full of twists and turns, and the battles are epic. It's a manga that stands out from the crowd.
It depends on personal preferences. Some consider Jojo to be peak fiction for its unique style and engaging storylines. Others may have different opinions.