ISIS Test Prop Colour different

[horsebox7]

Hi guys,

I got 4 vials of Test prop 100 from ISIS Pharmaceuticals.

2 of the vials are completely clear in colour whilst the other 2 have a yellow tinge to them. I know different suppliers have different colours, but I'm a bit wary of this.

All 4 vials have the same batch number and bb date too.

Looking a photos online they do look legit though...

Any suggestions?