Thank you!

So yesterday I upgraded my windows to version 10 and it asked me to install opera again. I installed it but now the title color is white/grey. I hate this color and ive tried everything on the internet with no succes. I have to mention that the title color in windows explorer is blue as I like it. Is any fix? If not well then I have to use other browser because this color is hurting my eyes. Its awfull.