Colliders are transparent/blue, handles are rainbow color

Hello, I upgraded my project from unity 5.0 to 5.2 and my box collider 2Ds and my handles have changed colour; my colliders are now transparent on the left side and they become blue as you go toward the right side. The handles (camera, light source, etc) are instead rainbow color.

I’m using Unity personal edition 64 bit 5.2 (latest version), DX 11, Windows 7 64 bit, MSI 970 GTX.

The main problem are the colliders, I’m making the levels for my games and I can’t see them at all even if I zoom in, which make my work really hard if not impossible. Is there a solution please? A patch maybe? Should I go back to unity 5.0?

Thanks a lot.

I’ve found a fix, I turned on the 3D icons, using the checkbox under Gizmos in the Scene window.