Steps to reproduce:

1) Download attached project 'case_893042ShurikenReproCase' and open in Unity
2) Open scene 'test' and press Play
Note: Animated shuriken(middle one) shows wrong material's color, but Tint color is always 128, 0, 255, 255(check attached image 'Color.png')
3) Stop Play mode
4) In Hierarchy window, select Particle System (1) >> Window >> Animation
5) In Animation view, create and save animation
6) Press Record button
7) In Inspector, expand Particle Material component
8) Open Color picker and Delete current value of red color(R)(128) and insert the same value(128)
------To set keyframe
9) Drag playback head (the red line) to 0:30
10) Open Color picker and Delete current value of red color(R)(128) and insert the same value(128)
------------To set second keyframe
11) Close Animation view
12) Press Play
Note: Material changed color, even value of red(R) is the same as before animating

Expected result: Color of the material should be the same as before animating(Check attached image 'Color.png' (right shuriken))

Actual result: Color of the material in Play mode changed after animating

Note: Works fine with Gamma color space

Check attached video which shows 4-12 steps of reproduction

Reproduced with:
5.3.7p4, 5.4.5p1, 5.5.2p4, 5.6.0f2, 2017.1.0a5

Fixed in : 5.5.3p4, 5.6.1p1 and 2017.1.0b2