Clutch fluid always darkens a lot faster than the same fluid used in brake systems. Nothing to worry about.
The reason for this is because the clutch hydraulic system actually moves the full stroke (Easy Boys!) of the system every time it is used. Brakes, by comparison, do not and really do not move hardly at all during use; they are a pressure based device rather than a movement based device. The movement of both the master cylinder's and slave cylinder's pistons causes a bit of wear in each cylinder, and that wear is metal that is worn away from each cylinder; that metal shows up as 'fines' by darkening the hydraulic fluid.
Brian
I bled my brake and clutch fluid about 4 months and 500 miles ago.All went well with no issues. Yesterday a rode and noticed that the clutch fluid was probably 50% darker then the brake fluid. I have had several bikes but never with clear reservoirs so maybe this is a common occurrence and I did not notice. Is that the case? Or is there an issue I should look for?
Thanks