I'm really not sure about that. I poured some into my wife's this am, (I get you really shouldn't top off but her's was down 1/3" from July as brakes have worn), it was clear coming out. I know there used to be dyed fluid so you would know when the new is being pushed through, but as you can see from my top pic, it looks like the reservoir has been filled with water. This was the same when the Lexus dealer did it. It was same with wife's. On hers, I could not get the bleeder open rear left, so I could only bleed 3/4 calipers, and again, did not stay clear. BMW, stayed clear a year later. I still have the old fluid in the Motive bottle and it's not yellow, it's honey, even darker.

this pic shows new brake fluid as clear, 5 y.o. as yellow. I could just pour some into a water bottle to show that it is clear, but I'm thinking why waste it...then again, maybe it is yellow. Pink antifreeze looks orange in the dark and even when a flashlight shined into it. Put that same fluid in a clear water bottle, pink. I have done that myself.

https://mechanics.stackexchange.com/...-looking-at-it

edit p.s.--I guess you are saying the fluid should does not have to look like it does in my first pic to be new. I don't see why it wouldn't, unless it were mixing with old fluid, which in my case, it was, because I only bled one caliper. You can ask your indie what he did. Maybe he will say I did one caliper. Maybe he will say I did 4. would be interesting to hear the response. Next spring I will do all 4. I think the color will remain clear that way, but who knows...

Johnhav430.....It's very possible that the new brake fluid is clear and my Indy might have done the flush through the rear passenger caliper. Funny thing is that this is probably the second brake fluid I have ever done with any of my cars. I did one with my Jaguar (with less than 5,000 miles on odometer) in order to keep my extended warranty in force. The reference I made with regards to the yellow tint was what I found on line. I was under the impression that DOT 3 fluid was available in a number of different tints. You may very well be correct that the Lexus new brake fluid has been contaminated with the rest of the system that was not bled, making it slightly yellow. I'm just happy that the majority of the fluid has been changed as it's 18 years old and brakes and tires are super important. Thanks for correcting me. PS. I will ask my Indy during my next visit how he want about flushing the system.

I reserve the right to be totally wrong LOL I'm not sure, because as mentioned, at night, my coolant can look orange (Dex Cool?). But when I siphon it into a water bottle, even at night, and hold it to light, it's pink. No light, orange. The brake fluid could be similar....I have even found images online with Prius, and at certain angles the pics looked like the coolant were orange. I have a feeling that most will say it doesn't matter, as long as your brake fluid is not black or greenish black....it would also be curious to empty a caliper of its fluid to see how much is really in there.