Is there any way to increase the contrast of the slider in the Table of Contents? It becomes very hard to see as you slide down a presentation. This has been asked before, a few years back. Has a solution been provided?

I designed an interactive script using Captivate 7. It works like a branching scenario, and is currently in use by about 350 phone operators, soon to be over 750. Everybody is pretty happy about it, but I am getting complaints - especially form the older people - that the slider in the TOC is very hard to see, and I agree - as you scroll down the TOC entries, the slider becomes lighter and lighter in color. Is there any way to tweak it so that I can increase contrast, or recolor it in a darker tone? I know this was discussed a couple of years ago, but I don't know if the issue was addressed by Adobe, or if anyone has come up with a solution.