1. Open Unity Connect window in 5.4.0b5;
2. Click 'Asset packages...' button;
3. Observe 'Done' button.

Actual result:
'Done' button is corrupted - it's colored in grey and purple and is inconsistent with current Connect window design (see attached screenshot).
Regression introduced in Unity 5.4.

Expected result:
'Done' button should not be corrupted when opening 'Asset Packages' window. Expected behaviour could be found in 5.3.1f1 (see attached screenshot).

Notes:
- Reproduces on both Windows 10 and OSX 10.11.3;
- Reproduces on 5.4.0b5, 5.4.0b4;
- Doesn't reproduce in 5.3.1f1;
- Doesn't reproduce if opening 5.3.1f1 and then 5.4.0b5.