So the upper screen on my red 3DS has been damaged for quite some time and the case itself is losing paint as well. I bought a blue galaxy themed case online and because it was an impulse buy i had to get the screw covers and buttons separately, i have the new screen but I've just realized that the buttons i bought don't come with a volume or 3D slider. I know the different color is going to drive me crazy but the only pieces i can find online are 30 $. Does reddit have any ideas for what i could do about this? Pictures in the comments.

Update: I've taken apart the console with no problems and am currently putting it back together, i would appreciate any tips or advice as this is my first time working on a game console.