Come in late to this thread but the fact you had to ask in the first place and have made it an issue, then yes, you are.. Your pride makes you feel superior to another group, which is discriminating and prejudice, the true definition of being racist. So the question is why do you feel the need to be proud of being white, black, pink, or mauve? You are who you are.
The only thing I take pride in is the things that myself, my family and friends have achieved.
I think it's a fine line. Being proud of your race is one thing but being proud in your culture is another. As a black man I am no more proud of being black than I am of being right handed. I just happened to be born this way. But I am proud of the cultures I come from both Jamaican and British. They both make me who I am.
So yes, it's completely fine to be proud of being white. I just don't know what you'd be proud of vs being proud of the culture that made you who you are. If that makes sense, which i doubt!
edit: Looking over this, proud is a strange word to use really. I feel proud when I've accomplished something. I didn't attempt to be born black and british so I'm not sure I'm proud of either trait but I'm certainly not ashamed by either trait either
Then do tell me when the English stand up for their International games singing God Save the Queen including some of the players, why are they being patriotic and proud of their team and identity just like all the other International teams when some hold their hands on their hearts. Just like America as the team members sing their national anthem. Is that shameful to be proud of?
What about snobbery? That can be classed as racism, being superior over another.