To set the thickness of your keyframes in the Time Slider
The Preferences window appears.
Key thickness is measured in pixels. The minimum key thickness is 1 pixel and the maximum is 63 pixels.
To set the color of a curve’s keyframes in the Time Slider
The spreadsheet for the selected animation curve appears in the Attribute Editor.
All the curve’s keyframes in the Time Slider are now the Curve Color you selected.