It’s very easy to change the color of the ribbon. Just double-click on the smart object symbol in the layers list.
New window opens with all the layers listed. Double click on the little dark red thumbnail and change the color to whatever you like.
After you change colors of all the layers, go to File > Save, and then File > Close. And just like that, you should now have a pretty little ribbon with a completely new color scheme. Have fun!
Source: 365psd.com